整理出ACM所有题目及答案

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大学ACM考试题目及作业答案整理

ACM作业与答案整理1、平面分割方法：设有n条封闭曲线画在平面上，而任何两条封闭曲线恰好相交于两点，且任何三条封闭曲线不相交于同一点，问这些封闭曲线把平面分割成的区域个数。

#include <iostream.h>int f(int n){if(n==1) return 2;else return f(n-1)+2*(n-1);}void main(){int n;while(1){cin>>n;cout<<f(n)<<endl;}}2、LELE的RPG难题：有排成一行的ｎ个方格，用红(Red)、粉(Pink)、绿(Green)三色涂每个格子，每格涂一色，要求任何相邻的方格不能同色，且首尾两格也不同色．编程全部的满足要求的涂法.#include<iostream.h>int f(int n){if(n==1) return 3;else if(n==2) return 6;else return f(n-1)+f(n-2)*2;}void main(){int n;while(1){cin>>n;cout<<f(n)<<endl;}}3、北大ACM(1942)Paths on a GridTime Limit: 1000MS Memory Limit: 30000K DescriptionImagine you are attending your math lesson at school. Once again, you are bored because your teacher tells things that you already mastered years ago (this time he's explaining that (a+b)2=a2+2ab+b2). So you decide to waste your time with drawing modern art instead.Fortunately you have a piece of squared paper and you choose a rectangle of size n*m on the paper. Let's call this rectangle together with the lines it contains a grid. Starting at the lower left corner of the grid, you move your pencil to the upper right corner, taking care that it stays on the lines and moves only to the right or up. The result is shown on the left:Really a masterpiece, isn't it? Repeating the procedure one more time, you arrive with the picture shown on the right. Now you wonder: how many different works of art can you produce?InputThe input contains several testcases. Each is specified by two unsigned 32-bit integers n and m, denoting the size of the rectangle. As you can observe, the number of lines of the corresponding grid is one more in each dimension. Input is terminated by n=m=0.OutputFor each test case output on a line the number of different art works that can be generated using the procedure described above. That is, how many paths are there on a grid where each step of the path consists of moving one unit to the right orone unit up? You may safely assume that this number fits into a 32-bit unsigned integer.Sample Input5 41 10 0Sample Output1262#include<iostream>using namespace std;longlong f(long long m, long long n){if(n==0) return 1;else return f(m-1,n-1)*m/n;}int main(){longlongm,n;while(scanf("%I64d %I64d",&n,&m) &&n+m){printf("%I64d\n",f(m+n,min(m,n)));}return 0;}1、（并查集）若某个家族人员过于庞大，要判断两个是否是亲戚，确实还很不容易，现在给出某个亲戚关系图，求任意给出的两个人是否具有亲戚关系。

计算机acm试题及答案

计算机acm试题及答案一、选择题1. 在计算机科学中，ACM代表什么？A. 人工智能与机器学习B. 计算机辅助制造C. 计算机辅助设计D. 国际计算机学会答案：D2. 下列哪个不是计算机程序设计语言？A. PythonB. JavaC. C++D. HTML答案：D3. 在计算机系统中，CPU代表什么？A. 中央处理单元B. 计算机辅助设计C. 计算机辅助制造D. 计算机辅助教学答案：A二、填空题1. 计算机的内存分为__________和__________。

答案：RAM；ROM2. 在编程中，__________是一种用于存储和操作数据的数据结构。

答案：数组3. 计算机病毒是一种__________，它能够自我复制并传播到其他计算机系统。

答案：恶意软件三、简答题1. 请简述计算机操作系统的主要功能。

答案：计算机操作系统的主要功能包括管理计算机硬件资源，提供用户界面，运行应用程序，以及控制其他系统软件和应用软件的运行。

2. 什么是云计算，它与传统的本地计算有何不同？答案：云计算是一种通过互联网提供计算资源（如服务器、存储、数据库、网络、软件等）的服务模式。

与传统的本地计算相比，云计算允许用户按需获取资源，无需购买和维护物理硬件，具有更高的灵活性和可扩展性。

四、编程题1. 编写一个程序，计算并输出从1到100（包括1和100）之间所有偶数的和。

答案：```pythonsum = 0for i in range(1, 101):if i % 2 == 0:sum += iprint(sum)```2. 给定一个字符串，编写一个函数，将字符串中的所有字符按ASCII 码值排序并返回。

答案：```pythondef sort_string(s):return ''.join(sorted(s))```五、论述题1. 论述计算机硬件和软件之间的关系及其对计算机系统性能的影响。

答案：计算机硬件是计算机系统的物质基础，包括CPU、内存、硬盘等，而软件则是运行在硬件上的程序和数据。

ACM软件大赛之编程大赛题目（附部分答案）

ACM 软件大赛之编程大赛比赛注意事项：l 比赛时间为3小时（小时（180180分钟）；比赛分两个阶段：第一阶段限时30分钟，完成公示的3题，第二阶段限时150分钟（事先完成第一阶段题目的小组可提前进入第二阶段）； l 比赛第一阶段的3道题目将在前期宣传中告知参赛选手，比赛第二阶段的题目将由赛事主席当场公布竞赛题目；主席当场公布竞赛题目；l 前两阶段题目分为三个分值（前两阶段题目分为三个分值（55分、分、1010分、分、1515分），第一阶段3道公示题都为5分；第二阶段总共15道题，根据不同的难度分值不同，分别为5道5分题，分题，55道10分题，分题，55道15分题；第一阶段参赛队员不可参考任何相关资料；第二阶段参赛队员可以携带诸如书，如书，手册，程序清单等参考资料。

手册，程序清单等参考资料。

比赛过程中队员不得携带任何电子媒质的资料；参比赛过程中队员不得携带任何电子媒质的资料；参赛者可以选择自己擅长的语言（赛者可以选择自己擅长的语言（C,C++,JAVA C,C++,JAVA 等等）进行编写等等）进行编写l 考虑到大一和大二学生的知识掌握程度，大一参加选手一开始就会有10分的分数，最后总分是由所做题目及初始的10分相加得到。

分相加得到。

l 每组队员根据安排使用电脑，小组人数为两人的使用一台电脑，超过两人的使用两台电脑，每台的电脑配置完全相同；脑，每台的电脑配置完全相同；l 各小组每做完一题或几题，必须交予评委老师运行，评委老师当场给分；各小组每做完一题或几题，必须交予评委老师运行，评委老师当场给分； l 如在比赛中发现作弊等行为，将取消比赛资格。

如在比赛中发现作弊等行为，将取消比赛资格。

第一阶段公示题目：题目一：（5分）打印以下图形，纵遵从字母顺序，行字符数遵从斐波那契数列ABCCDDD EEEEEFFFFFFFFGGGGGGGGGGGGG#include<iostream>int f(int x){int a = 1 , b = 0;int max_ = x;int sum = 0; for(int i = 0; i < max_ ; i++){sum = a + b;a = b;b = sum;}return sum;}void loop_print(int num,char chr){for(int i = 0; i < num ;i++)std::cout<<chr;std::cout<<"\n";}int main(){int line_max = 7;char chr = 'A';for(int line = 0; line < line_max; line++){loop_print(f(line+1),chr);chr++;}return 0;}题目二：（5分）有个电子钟，12点显示为12:00（即12小时制），那么请问一天24时间内，出现连续3个相同数字的钟点有几个？#include<iostream>using namespace std;bool check(int me){int h= me/100;int m= me-100*h;return h<=12&&m<=59&&h>0?true:false;//12小时制小时制}int main(){int me=0;int j(0);//总计数器总计数器while( me<1270){//max 12:59int t= me;int n[4];for(int i=0;i<4;i++){n[i]=t%10;t /= 10;}if(n[1]==n[2]&&(n[0]==n[1]||n[3]==n[1])&&check( me)){//cout<<n[3]<<n[2]<<":"<<n[1]<<n[0]<<"\n";//testj++;me++;}cout<<"total: "<<j*2<<endl;}题目三：（5分）10进制的四位数中有几个符合如下特征：将其分别表示为16进制、10进制、12进制，在每种状态下，分别将各个位上的数相加，能得到3个相等10进制数。

ACM题目、测试用例及参考答案汇编——一次ACM协会内部测试

ACM题目、测试用例及参考答案汇编——一次ACM协会内部测试第一题：梦境是虚幻吗？时间限制：3000ms 内存限制：65535KB 难度：★★描述《盗梦空间》是一部精彩的影片，在这部电影里，Cobb等人可以进入梦境之中，梦境里的时间会比现实中的时间过得快得多，这里假设现实中的3分钟，在梦里就是1小时。

然而，Cobb他们利用强效镇静剂，可以从第一层梦境进入第二层梦境，甚至进入三层，四层梦境，每层梦境都会产生同样的时间加速效果。

那么现在给你Cobb在各层梦境中经历的时间，你能算出现实世界过了多长时间吗？比如，Cobb先在第一层梦境待了1个小时，又在第二层梦境里待了1天，之后，返回第一层梦境之后立刻返回了现实。

那么在现实世界里，其实过了396秒（6.6分钟）输入第一行输入一个整数T（0<=T<=100)，表示测试数据的组数。

每组测试数据的第一行是一个数字M(3<=M<=100)随后的M行每行的开头是一个字符串，该字符串如果是"IN" 则Cobb向更深层的梦境出发了，如果是字符串"OUT"则表示Cobb从深层的梦回到了上一层。

如果是首字符串是"STAY"则表示Cobb在该层梦境中停留了一段时间，本行随后将是一个整数S表示在该层停留了S分钟（1<=S<=10000000)。

数据保证在现实世界中，时间过了整数秒。

输出对于每组测试数据，输出现实世界过的时间（以秒为单位）。

样例输入16INSTAY 60INSTAY 1440OUTOUT样例输出396测试输入106INSTAY 60INSTAY 1440OUTOUT6INININOUTOUTOUT7INININSTAY 0 OUTOUTOUT2INSTAY 203INSTAY 0 OUT3INSTAY 10 OUT4INSTAY 10 STAY 10 OUT5INSTAY 20 STAY 20 OUT STAY 120 10INSTAY 20 STAY 20 INSTAY 1440STAY 1440OUTSTAY 120OUTSTAY 11STAY 50测试输出39660306073209723000参考代码：#include<stdio.h>int main(){int n;char a[5];scanf("%d",&n);while(n--){int m,i,b=1,c,time=0;scanf("%d",&m);for(i=0;i<m;i++){scanf("%s",&a);if(a[0]=='I') b*=20;else if(a[0]=='S') {scanf("%d",&c);time+=c*60/b;} else if(a[0]=='O') b/=20;}printf("%d\n",time);}return 0;}第二题：独木舟过河时间限制：3000ms 内存限制：65535KB 难度：★★描述进行一次独木舟的旅行活动，独木舟可以在港口租到，并且之间没有区别。

ACM题目及答案

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某队比赛时，┃┃一、四号位放主攻手，二、五号位放二传手，三、六号位放副攻┠──┬──┬──┨手。

队员所穿球衣分别为１，２，３，４，５，６号，但每个队┃ 四│ 三│ 二┃员的球衣都与他们的站位号不同。

整理出ACM所有题目及答案

1000 A + B ProblemProblem DescriptionCalculate A + B .InputEach line will contain two integers A and B. Process to end of file.OutputFor each case, output A + B in one line.Sample Input1 1Sample Output2AuthorHDOJ代码：#include<stdio.h>int main(){int a , b;while( scanf ( "%d %d" ,& a,& b)!= EOF)printf( "%d\n" , a+b);}1001 Sum ProblemProblem DescriptionHey, welcome to HDOJ(Hangzhou Dianzi University Online Judge).In this problem, your task is to calculate SUM(n) = 1 + 2 + 3 + ... + n.InputThe input will consist of a series of integers n, one integer per line.OutputFor each case, output SUM(n) in one line, followed by a blank line. You may assume the result will be in the range of 32-bit signed integer.Sample Input1100Sample Output15050AuthorDOOM III解答：#include<stdio.h>main (){int n , i , sum;sum =0;while (( scanf ( "%d" ,& n)!=- 1)) {sum for =0;( i =0; i <= n; i ++)sum +=i ;printf( "%d\n\n" , sum);}}1002 A + B Problem IIProblem DescriptionI have a very simple problem for you. Given two integers A and B, your job is to calculate the Sum of A + B. InputThe first line of the input contains an integer T(1<=T<=20) which means the number of test cases. Then T lines follow, each line consists of two positive integers, A and B. Notice that the integers are very large, that means you should not process them by using 32-bit integer. You may assume the length of each integer will not exceed 1000.OutputFor each test case, you should output two lines. The first line is "Case #:", # means the number of the test case. The second line is the an equation "A + B = Sum", Sum means the result of A + B. Note there are some spaces int the equation. Output a blank line between two test cases.Sample Input21 2Sample OutputCase 1:1+2=3Case 2:Author代码：#include <stdio.h>#include <string.h>int main (){char str1 [ 1001 ], str2 [ 1001 ];int t , i , len_str1 , len_str2 , len_max , num = 1 , k ; scanf ( "%d" , & t );getchar ();while ( t --){int a [ 1001 ] = { 0}, b [1001]={ 0}, c [1001]={ 0};scanf ( "%s" , str1 );len_str1 = strlen ( str1 );for ( i = 0 ; i <= len_str1 - 1;++ i )a [ i ] = str1 [ len_str1 - 1 - i ] - '0' ;scanf ( "%s" , str2 );len_str2 = strlen ( str2 );for ( i = 0 ; i <= len_str2 - 1;++ i )b [ i ] = str2 [ len_str2 - 1 - i ] - '0' ;if ( len_str1 > len_str2 )len_max = len_str1 ;elselen_max = len_str2 ;k = 0 ;for ( i = 0 ; i <= len_max - 1 ;++ i ){c [ i ] = ( a[ i ] + b [ i ] + k ) % 10 ;k = ( a[ i ] + b [ i ] + k ) / 10 ;}if ( k != 0 )c [ len_max ] = 1 ;printf ( "Case %d:\n" , num );num ++;printf ( "%s + %s = " , str1 , str2 );if ( c[ len_max ] == 1 )printf ( "1" );for ( i = len_max - 1 ; i >= 0 ;-- i ){printf ( "%d" , c [ i ]);}printf ( "\n" );if ( t >= 1 )printf ( "\n" );}return 0 ;}1005 Number Sequence Problem DescriptionA number sequence is defined as follows:f(1) = 1, f(2) = 1, f(n) = (A * f(n - 1) + B * f(n - 2)) mod 7.Given A, B, and n, you are to calculate the value of f(n).InputThe input consists of multiple test cases. Each test case contains 3 integers A, B and n on a single line (1 <= A, B <= 1000, 1 <= n <= 100,000,000). Three zeros signal the end of input and this test case is not to be processed.OutputFor each test case, print the value of f(n) on a single line.Sample Input1 1 312100 0 0Sample Output25AuthorCHEN, ShunbaoSourceRecommendJGShining代码：#include<stdio.h>int f [ 200 ];int main (){int a , b, n, i ;while ( scanf ( "%d%d%d" ,& a,& b,& n)&& a&&b&&n){if ( n>= 3){f [ 1]= 1; f [ 2]= 1;for ( i =3; i <= 200 ; i ++){f [ i ]=( a* f [ i - 1]+ b* f [ i - 2])% 7;if ( f [ i - 1]== 1&&f [ i ]== 1)break ;}i -= 2;n =n%i ;if ( n== 0)printf ( "%d\n" , f [ i ]);elseprintf ( "%d\n" , f [ n]);}elseprintf ( "1\n" );}return 0 ;}1008 ElevatorProblem DescriptionThe highest building in our city has only one elevator. A request list is made up with N positive numbers. The numbers denote at which floors the elevator will stop, in specified order. It costs 6 seconds to move the elevatorup one floor, and 4 seconds to move down one floor. The elevator will stay for 5 seconds at each stop.For a given request list, you are to compute the total time spent to fulfill the requests on the list. The elevator is on the 0th floor at the beginning and does not have to return to the ground floor when the requests are fulfilled.InputThere are multiple test cases. Each case contains a positive integer N, followed by N positive numbers. All the numbers in the input are less than 100. A test case with N = 0 denotes the end of input. This test case is not to be processed.OutputPrint the total time on a single line for each test case.Sample Input1 23231Sample Output1741AuthorZHENG, JianqiangSourceRecommendJGShining代码：#include<stdio.h>int a [ 110 ];int main(){int while { sum , i , n;( scanf ( "%d" ,& n)&& n!= 0)forscanf ( i =1; i <= n; i ++)( "%d" ,& a[ i ]);sum a for=0;[ 0]= 0;( i =1; i <= n; i ++){ifsum ( a[ i ]> a[ i - 1])+=6*( a[ i ]- a[ i - 1]);elsesum +=4*( a[ i - 1]- a[ i ]);sum +=5;printf ( "%d\n" , sum);}return 0 ;}1009 FatMouse' TradeProblem DescriptionFatMouse prepared M pounds of cat food, ready to trade with the cats guarding the warehouse containing his favorite food, JavaBean.The warehouse has N rooms. The i-th room contains J[i] pounds of JavaBeans and requires F[i] pounds of cat food. FatMouse does not have to trade for all the JavaBeans in the room, instead, he may get J[i]* a% pounds of JavaBeans if he pays F[i]* a% pounds of cat food. Here a is a real number. Now he is assigning this homework to you: tell him the maximum amount of JavaBeans he can obtain.InputThe input consists of multiple test cases. Each test case begins with a line containing two non-negative integersM and N. Then N lines follow, each contains two non-negative integers J[i] and F[i] respectively. The last test caseis followed by two -1's. All integers are not greater than 1000.OutputFor each test case, print in a single line a real number accurate up to 3 decimal places, which is the maximum amount of JavaBeans that FatMouse can obtain.Sample Input53724352203251824151510-1-1Sample OutputAuthorCHEN, YueSourceRecommendJGShining代码：#include<stdio.h>#include<string.h>#define MAX 1000int main(){int i,j,m,n,temp;int J[MAX],F[MAX];double P[MAX];double sum,temp1;scanf("%d%d",&m,&n);while(m!=-1&&n!=-1){sum=0;memset(J,0,MAX*sizeof(int));memset(F,0,MAX*sizeof(int));memset(P,0,MAX*sizeof(double));for(i=0;i<n;i++){ scanf("%d%d",&J[i],&F[i]); P[i]=J[i]*1.0/((double)F[i]); }for(i=0;i<n;i++){for(j=i+1;j<n;j++){if(P[i]<P[j]){temp1=P[i];P[i]=P[j];P[j]=temp1;temp=J[i]; J[i]=J[j]; J[j]=temp; temp=F[i];F[i]=F[j]; F[j]=temp;} }}for(i=0;i<n;i++) { if(m<F[i]){ else{sum+=m/((double)F[i])*J[i];sum+=J[i];break;m-=F[i];} }}printf("%.3lf\n",sum); scanf("%d%d",&m,&n); }return 0; }1021 Fibonacci AgainProblem DescriptionThere are another kind of Fibonacci numbers: F(0) = 7, F(1) = 11, F(n) = F(n-1) + F(n-2) (n>=2).InputInput consists of a sequence of lines, each containing an integer n. (n < 1,000,000).OutputPrint the word "yes" if 3 divide evenly into F(n). Print the word "no" if not.Sample Input0 1 2 3 4 5Sample Outputno no yes no no noAuthorLeojayRecommendJGShining#include<stdio.h> int main () { long while if printfn ;( scanf ( "%ld" ,& n) !=( n%8==2 || n %8==6) ( "yes\n" ); EOF ) elseprintf ( "no\n");return0 ;}1089 A+B for Input-Output Practice (I)Problem DescriptionYour task is to Calculate a + b.Too easy?! Of course! I specially designed the problem for acm beginners.You must have found that some problems have the same titles with this one, yes, all these problems were designed for the same aim.InputThe input will consist of a series of pairs of integers a and b, separated by a space, one pair of integers per line.OutputFor each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input.Sample Input151020Sample Output630AuthorlcyRecommendJGShining解答：#include<stdio.h>main (){int a , b;while( scanf ( "%d%d" ,& a,& b)!=EOF)printf( "%d\n" , a+b);}1090 A+B for Input-Output Practice (II)Problem DescriptionYour task is to Calculate a + b.InputInput contains an integer N in the first line, and then N lines follow. Each line consists of a pair of integers a and b, separated by a space, one pair of integers per line.OutputFor each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input.Sample Input2151020Sample Output630AuthorlcyRecommendJGShining解答：#include<stdio.h>#define M 1000void main (){int a , b, n, j [ M], i ;//printf("please input n:\n");scanf( "%d" ,& n);for( i =0; i <n; i ++){scanf( "%d%d" ,& a,& b);//printf("%d %d",a,b);j[ i ]= a+b;}i=0;while( i <n){printf( "%d" , j [ i ]);i++;printf( "\n" );}}1091 A+B for Input-Output Practice(III) Problem DescriptionYour task is to Calculate a + b.InputInput contains multiple test cases. Each test case contains a pair of integers a and b, one pair of integers per line.A test case containing 0 0 terminates the input and this test case is not to be processed.OutputFor each pair of input integers a and b you should output the sum of a and b in one line, and with one line ofoutput for each line in input.Sample Input15102000Sample Output630AuthorlcyRecommendJGShining解答：#include<stdio.h>main (){int a , b;scanf( "%d %d" ,& a,& b);while(!( a== 0&&b==0)){printf( "%d\n" , a+b);scanf( "%d %d" ,& a,& b);}}1092 A+B for Input-Output Practice(IV) Problem DescriptionYour task is to Calculate the sum of some integers.InputInput contains multiple test cases. Each test case contains a integer N, and then N integers follow in the same line. A test case starting with 0 terminates the input and this test case is not to be processed.OutputFor each group of input integers you should output their sum in one line, and with one line of output for each line in input.。

ACM题库完整版

#include<stdio.h> int type(int); char week[7][10]={"saturday","sunday","monday","tuesday","wednesday","thursday","friday"}; int year[2]={365,366}; int month[2][12]={31,28,31,30,31,30,31,31,30,31,30,31,31,29,31,30,31,30,31,31,30,31,30,31}; int main(void) { int days,dayofweek; int i=0,j=0; while(scanf("%d",&days)&&days!=-1) { dayofweek=days%7; for(i=2000;days>=year[type(i)];i++) days-=year[type(i)]; for(j=0;days>=month[type(i)][j];j++) days-=month[type(i)][j]; printf("%d-%02d-%02d%s\n",i,j+1,days+1,week[dayofweek]); } return 0; } int type(int m) { if(m%4!=0||(m%100==0&&m%400!=0)) return 0; else return 1; }
构造新的模运算
1.题目描述给定整数a,b,n,要求计算(a^b)mod n 2.输入多组数据;=a<=40,0<=b<=3,1<=n<=500 3.输出每组数据输出一行,为所求值 4.样例输入 #include<stdio.h> 235 224 #include<math.h> 5.样例输出 int main() 3 { 0

大一acm竞赛试题及答案

大一acm竞赛试题及答案一、选择题（每题5分，共20分）1. 下列哪个算法的时间复杂度为O(n^2)？A. 快速排序B. 归并排序C. 插入排序D. 冒泡排序答案：C2. 在C++中，下列哪个关键字用于定义类？A. structB. classC. unionD. enum答案：B3. 下列哪个数据结构适合用于实现稀疏矩阵？A. 顺序存储B. 链式存储C. 压缩存储D. 散列存储答案：C4. 在图论中，下列哪个算法用于寻找最短路径？A. 深度优先搜索B. 广度优先搜索C. 迪杰斯特拉算法D. 弗洛伊德算法二、填空题（每题5分，共20分）1. 在二叉树的遍历算法中，______遍历会先访问根节点。

答案：前序2. 哈希表的冲突解决方法之一是______。

答案：链地址法3. 在数据库中，用于实现一对多关系的表结构是______。

答案：外键4. 动态规划算法的核心是______。

答案：状态转移方程三、编程题（每题30分，共60分）1. 编写一个函数，实现对一个整数数组进行排序，并返回排序后的数组。

答案：```pythondef sort_array(arr):arr.sort()return arr```2. 编写一个函数，实现计算给定整数n的阶乘。

答案：```pythondef factorial(n):if n == 0:return 1return n * factorial(n - 1)```四、算法题（每题30分，共30分）1. 给定一个整数数组，请设计一个算法找出数组中第二大的数。

答案：```pythondef find_second_max(nums):first_max = second_max = float('-inf')for num in nums:if num > first_max:second_max = first_maxfirst_max = numelif num > second_max and num != first_max:second_max = numreturn second_max```。

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1111111杭电：1000 A + B Problem (4)1001 Sum Problem (5)1002 A + B Problem II (6)1005 Number Sequence (8)1008 Elevator (9)1009 FatMouse' Trade (11)1021 Fibonacci Again (13)1089 A+B for Input-Output Practice (I) (14)1090 A+B for Input-Output Practice (II) (15)1091 A+B for Input-Output Practice (III) (16)1092 A+B for Input-Output Practice (IV) (17)1093 A+B for Input-Output Practice (V) (18)1094 A+B for Input-Output Practice (VI) (20)1095 A+B for Input-Output Practice (VII) (21)1096 A+B for Input-Output Practice (VIII) (22)1176 免费馅饼 (23)1204 糖果大战 (25)1213 How Many Tables (26)2000 ASCII码排序 (32)2001 计算两点间的距离 (34)2002 计算球体积 (35)2003 求绝对值 (36)2004 成绩转换 (37)2005 第几天？ (38)2006 求奇数的乘积 (40)2007 平方和与立方和 (41)2008 数值统计 (42)2009 求数列的和 (43)2010 水仙花数 (44)2011 多项式求和 (46)2012 素数判定 (47)2014 青年歌手大奖赛_评委会打分 (49)2015 偶数求和 (50)2016 数据的交换输出 (52)2017 字符串统计 (54)2019 数列有序! (55)2020 绝对值排序 (56)2021 发工资咯：） (58)2033 人见人爱A+B (59)2037 今年暑假不AC (61)2039 三角形 (63)2040 亲和数 (64)2045 不容易系列之(3)—— LELE的RPG难题 (65)2049 不容易系列之(4)——考新郎 (66)2056 Rectangles (68)2073 无限的路 (69)2084 数塔 (71)2201 熊猫阿波的故事 (72)2212 DFS (73)2304 Electrical Outlets (74)2309 ICPC Score Totalizer Software (75)2317 Nasty Hacks (77)2401 Baskets of Gold Coins (78)2500 做一个正气的杭电人 (79)2501 Tiling_easy version (80)2502 月之数 (81)2503 a/b + c/d (82)2504 又见GCD (83)2519 新生晚会 (84)2520 我是菜鸟，我怕谁 (85)2521 反素数 (86)2522 A simple problem (88)2523 SORT AGAIN (89)2524 矩形A + B (90)2535 Vote (91)2537 8球胜负 (93)2539 点球大战 (95)2547 无剑无我 (98)2548 两军交锋 (99)2549 壮志难酬 (100)2550 百步穿杨 (101)2551 竹青遍野 (103)2552 三足鼎立 (104)2553 N皇后问题 (105)2554 N对数的排列问题 (106)2555 人人都能参加第30届校田径运动会了 (107)2560 Buildings (110)2561 第二小整数 (112)2562 奇偶位互换 (113)2563 统计问题 (114)2564 词组缩写 (115)2565 放大的X (117)2566 统计硬币 (118)2567 寻梦 (119)2568 前进 (121)2569 彼岸 (123)2700 Parity (124)2577 How to Type (126)北京大学：1035 Spell checker (129)1061 青蛙的约会 (133)1142 Smith Numbers (136)1200 Crazy Search (139)1811 Prime Test (141)2262 Goldbach's Conjecture (146)2407 Relatives (150)2447 RSA (152)2503 Babelfish (156)2513 Colored Sticks (159)ACM算法：kurXX最小生成树 (163)Prim (164)堆实现最短路 (166)最短路DIJ普通版 (167)floyd (168)BELL_MAN (168)拓扑排序 (169)DFS强连通分支 (170)最大匹配 (172)还有两个最大匹配模板 (173)最大权匹配,KM算法 (175)两种欧拉路 (177)无向图： (177)有向图： (178)【最大流】Edmonds Karp (178)dinic (179)【最小费用最大流】Edmonds Karp对偶算法 (181)ACM题目：【题目】排球队员站位问题 (182)【题目】把自然数Ｎ分解为若干个自然数之和。

(184)【题目】把自然数Ｎ分解为若干个自然数之积。

(185)【题目】马的遍历问题。

(185)【题目】加法分式分解。

(186)【题目】地图着色问题 (189)【题目】放置方案 (191)【题目】找迷宫的最短路径。

(194)【题目】火车调度问题 (195)【题目】农夫过河。

(197)【题目】七段数码管问题。

(199)【题目】求相邻的格的数不连续 (200)【题目】棋盘上放棋子 (202)【题目】迷宫问题. (204)【题目】一笔画问题 (205)【题目】城市遍历问题. (207)【题目】棋子移动问题 (208)【题目】求集合元素问题（1,2x+1,3X+1类) (209)杭电：1000 A + B ProblemProblem DescriptionCalculate A + B.InputEach line will contain two integers A and B. Process to end of file.OutputFor each case, output A + B in one line.Sample Input1 1Sample Output2AuthorHDOJ代码：#include<stdio.h>int main(){int a,b;while(scanf("%d %d",&a,&b)!=EOF)printf("%d\n",a+b);}1001 Sum ProblemProblem DescriptionHey, welcome to HDOJ(Hangzhou Dianzi University Online Judge).In this problem, your task is to calculate SUM(n) = 1 + 2 + 3 + ... + n.InputThe input will consist of a series of integers n, one integer per line.OutputFor each case, output SUM(n) in one line, followed by a blank line. You may assume the result will be in the range of 32-bit signed integer.Sample Input1100Sample Output15050AuthorDOOM III解答：#include<stdio.h>main(){int n,i,sum;sum=0;while((scanf("%d",&n)!=-1)){sum=0;for(i=0;i<=n;i++)sum+=i;printf("%d\n\n",sum);}}1002 A + B Problem IIProblem DescriptionI have a very simple problem for you. Given two integers A and B, your job is to calculate the Sum of A + B.InputThe first line of the input contains an integer T(1<=T<=20) which means the number of test cases. Then T lines follow, each line consists of two positive integers, A and B. Notice that the integers are very large, that means you should not process them by using 32-bit integer. You may assume the length of each integer will not exceed 1000.OutputFor each test case, you should output two lines. The first line is "Case #:", # means the number of the test case. The second line is the an equation "A + B = Sum", Sum means the result of A + B. Note there are some spaces int the equation. Output a blank line between two test cases.Sample Input21 2112233445566778899 998877665544332211Sample OutputCase 1:1 +2 = 3Case 2:112233445566778899 + 998877665544332211 = 1111111111111111110AuthorIgnatius.L代码：#include <stdio.h>#include <string.h>int main(){char str1[1001], str2[1001];int t, i, len_str1, len_str2, len_max, num = 1, k; scanf("%d", &t);getchar();while(t--){int a[1001] = {0}, b[1001] = {0}, c[1001] = {0}; scanf("%s", str1);len_str1 = strlen(str1);for(i = 0; i <= len_str1 - 1; ++i)a[i] = str1[len_str1 - 1 - i] - '0';scanf("%s",str2);len_str2 = strlen(str2);for(i = 0; i <= len_str2 - 1; ++i)b[i] = str2[len_str2 - 1 - i] - '0';if(len_str1 > len_str2)len_max = len_str1;elselen_max = len_str2;k = 0;for(i = 0; i <= len_max - 1; ++i){c[i] = (a[i] + b[i] + k) % 10;k = (a[i] + b[i] + k) / 10;}if(k != 0)c[len_max] = 1;printf("Case %d:\n", num);num++;printf("%s + %s = ", str1, str2);if(c[len_max] == 1)printf("1");for(i = len_max - 1; i >= 0; --i){printf("%d", c[i]);}printf("\n");if(t >= 1)printf("\n");}return 0;}1005 Number SequenceProblem DescriptionA number sequence is defined as follows:f(1) = 1, f(2) = 1, f(n) = (A * f(n - 1) + B * f(n - 2)) mod 7.Given A, B, and n, you are to calculate the value of f(n).InputThe input consists of multiple test cases. Each test case contains 3 integers A, B and n on a single line (1 <= A, B <= 1000, 1 <= n <= 100,000,000). Three zeros signal the end of input and this test case is not to be processed.OutputFor each test case, print the value of f(n) on a single line.Sample Input1 1 31 2 100 0 0Sample Output25AuthorCHEN, ShunbaoSourceZJCPC2004RecommendJGShining代码：#include<stdio.h>int f[200];int main(){int a,b,n,i;while(scanf("%d%d%d",&a,&b,&n)&&a&&b&&n){if(n>=3){f[1]=1;f[2]=1;for(i=3;i<=200;i++){f[i]=(a*f[i-1]+b*f[i-2])%7;if(f[i-1]==1&&f[i]==1)break;}i-=2;n=n%i;if(n==0)printf("%d\n",f[i]);elseprintf("%d\n",f[n]);}elseprintf("1\n");}return 0;}1008 ElevatorProblem DescriptionThe highest building in our city has only one elevator. A request list is made up with N positive numbers. The numbers denote at which floors the elevator will stop, in specified order. It costs 6 seconds to move the elevator up one floor, and 4 seconds to move down one floor. The elevator will stay for 5 seconds at each stop.For a given request list, you are to compute the total time spent to fulfill the requests on the list. The elevator is on the 0th floor at the beginning and does not have to return to the ground floor when the requests are fulfilled.InputThere are multiple test cases. Each case contains a positive integer N, followed by N positive numbers. All the numbers in the input are less than 100. A test case with N = 0 denotes the end of input. This test case is not to be processed.OutputPrint the total time on a single line for each test case.Sample Input1 23 2 3 1Sample Output1741AuthorZHENG, JianqiangSourceZJCPC2004RecommendJGShining代码：#include<stdio.h>int a[110];int main(){int sum,i,n;while(scanf("%d",&n)&&n!=0){for(i=1;i<=n;i++)scanf("%d",&a[i]);sum=0;a[0]=0;for(i=1;i<=n;i++){if(a[i]>a[i-1])sum+=6*(a[i]-a[i-1]);elsesum+=4*(a[i-1]-a[i]);sum+=5;}printf("%d\n",sum);}return 0;}1009 FatMouse' TradeProblem DescriptionFatMouse prepared M pounds of cat food, ready to trade with the cats guarding the warehouse containing his favorite food, JavaBean.The warehouse has N rooms. The i-th room contains J[i] pounds of JavaBeans and requires F[i] pounds of cat food. FatMouse does not have to trade for all the JavaBeans in the room, instead, he may get J[i]* a% pounds of JavaBeans if he pays F[i]* a% pounds of cat food. Here a is a real number. Now he is assigning this homework to you: tell him the maximum amount of JavaBeans he can obtain.InputThe input consists of multiple test cases. Each test case begins with a line containing twonon-negative integers M and N. Then N lines follow, each contains two non-negative integers J[i] and F[i] respectively. The last test case is followed by two -1's. All integers are not greater than 1000.OutputFor each test case, print in a single line a real number accurate up to 3 decimal places, which is the maximum amount of JavaBeans that FatMouse can obtain.Sample Input5 3 7 2 4 3 5 2 20 3 25 18 24 15 15 10 -1 -1Sample Output13.333 31.500AuthorCHEN, YueSourceZJCPC2004RecommendJGShining代码：#include<stdio.h>#include<string.h>#define MAX 1000int main(){int i,j,m,n,temp;int J[MAX],F[MAX];double P[MAX];double sum,temp1;scanf("%d%d",&m,&n);while(m!=-1&&n!=-1){sum=0;memset(J,0,MAX*sizeof(int));memset(F,0,MAX*sizeof(int));memset(P,0,MAX*sizeof(double));for(i=0;i<n;i++){ scanf("%d%d",&J[i],&F[i]); P[i]=J[i]*1.0/((double)F[i]); }for(i=0;i<n;i++){for(j=i+1;j<n;j++){if(P[i]<P[j]){temp1=P[i]; P[i]=P[j]; P[j]=temp1;temp=J[i]; J[i]=J[j]; J[j]=temp;temp=F[i]; F[i]=F[j]; F[j]=temp;}}}for(i=0;i<n;i++){if(m<F[i]){ sum+=m/((double)F[i])*J[i]; break; }else { sum+=J[i]; m-=F[i]; }}printf("%.3lf\n",sum); scanf("%d%d",&m,&n);}return 0;}1021 Fibonacci AgainProblem DescriptionThere are another kind of Fibonacci numbers: F(0) = 7, F(1) = 11, F(n) = F(n-1) + F(n-2) (n>=2). InputInput consists of a sequence of lines, each containing an integer n. (n < 1,000,000).OutputPrint the word "yes" if 3 divide evenly into F(n).Print the word "no" if not.Sample Input12345Sample OutputnonoyesnononoAuthorLeojayRecommendJGShining#include<stdio.h>int main(){long n;while(scanf("%ld",&n) != EOF)if (n%8==2 || n%8==6)printf("yes\n");elseprintf("no\n");}1089 A+B for Input-Output Practice(I)Problem DescriptionYour task is to Calculate a + b.Too easy?! Of course! I specially designed the problem for acm beginners.You must have found that some problems have the same titles with this one, yes, all these problems were designed for the same aim.InputThe input will consist of a series of pairs of integers a and b, separated by a space, one pair of integers per line.OutputFor each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input.Sample Input1 510 20Sample Output630AuthorlcyRecommendJGShining解答：#include<stdio.h>main(){while(scanf("%d%d",&a,&b)!=EOF)printf("%d\n",a+b);}1090 A+B for Input-Output Practice(II)Problem DescriptionYour task is to Calculate a + b.InputInput contains an integer N in the first line, and then N lines follow. Each line consists of a pair of integers a and b, separated by a space, one pair of integers per line.OutputFor each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input.Sample Input21 510 20Sample Output630AuthorlcyRecommendJGShining解答：#include<stdio.h>#define M 1000void main()int a ,b,n,j[M],i;//printf("please input n:\n");scanf("%d",&n);for(i=0;i<n;i++){scanf("%d%d",&a,&b);//printf("%d %d",a,b);j[i]=a+b;}i=0;while(i<n){printf("%d",j[i]);i++;printf("\n");}}1091 A+B for Input-Output Practice(III)Problem DescriptionYour task is to Calculate a + b.InputInput contains multiple test cases. Each test case contains a pair of integers a and b, one pair of integers per line. A test case containing 0 0 terminates the input and this test case is not to be processed.OutputFor each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input.Sample Input1 510 200 0Sample Output6AuthorlcyRecommendJGShining解答：#include<stdio.h>main(){int a,b;scanf("%d %d",&a,&b);while(!(a==0&&b==0)){printf("%d\n",a+b);scanf("%d %d",&a,&b);}}1092 A+B for Input-Output Practice(IV)Problem DescriptionYour task is to Calculate the sum of some integers.InputInput contains multiple test cases. Each test case contains a integer N, and then N integers followin the same line. A test case starting with 0 terminates the input and this test case is not to be processed.OutputFor each group of input integers you should output their sum in one line, and with one line of output for each line in input.Sample Input4 1 2 3 45 1 2 3 4 5Sample Output1015AuthorlcyRecommendJGShining解答：#include <stdio.h>int main(){int n,sum,i,t;while(scanf("%d",&n)!=EOF&&n!=0){sum=0;for(i=0;i<n;i++){scanf("%d",&t);sum=sum+t;}printf("%d\n",sum);}}1093 A+B for Input-Output Practice(V)Problem DescriptionYour task is to calculate the sum of some integers.InputInput contains an integer N in the first line, and then N lines follow. Each line starts with a integer M, and then M integers follow in the same line.OutputFor each group of input integers you should output their sum in one line, and with one line of output for each line in input.Sample Input24 1 2 3 45 1 2 3 4 5Sample Output1015Authorlcy解答：#include<stdio.h>main(){int n,a,b,i,j,sum;sum=0;while(scanf("%d\n",&n)!=-1){for(i=0;i<n;i++){scanf("%d",&b);for(j=0;j<b;j++){scanf("%d",&a);sum+=a;}printf("%d\n",sum);sum=0;}}}1094 A+B for Input-Output Practice(VI)Problem DescriptionYour task is to calculate the sum of some integers.InputInput contains multiple test cases, and one case one line. Each case starts with an integer N, and then N integers follow in the same line.OutputFor each test case you should output the sum of N integers in one line, and with one line of output for each line in input.Sample Input4 1 2 3 45 1 2 3 4 5Sample Output1015AuthorlcyRecommendJGShining解答：#include<stdio.h>main(){int n,a,b,i,j,sum;sum=0;while(scanf("%d\n",&n)!=-1){for(j=0;j<n;j++){scanf("%d",&a);sum+=a;}printf("%d\n",sum);sum=0;}}[ Copy to Clipboard ][ Save to File]1095 A+B for Input-Output Practice(VII)Problem DescriptionYour task is to Calculate a + b.InputThe input will consist of a series of pairs of integers a and b, separated by a space, one pair of integers per line.OutputFor each pair of input integers a and b you should output the sum of a and b, and followed by a blank line.Sample Input1 510 20Sample Output630AuthorlcyRecommendJGShining解答：#include<stdio.h>main(){int a,b;while(scanf("%d%d",&a,&b)!=EOF)printf("%d\n\n",a+b);}1096 A+B for Input-Output Practice(VIII)Problem DescriptionYour task is to calculate the sum of some integers.InputInput contains an integer N in the first line, and then N lines follow. Each line starts with a integer M, and then M integers follow in the same line.OutputFor each group of input integers you should output their sum in one line, and you must note that there is a blank line between outputs.Sample Input34 1 2 3 45 1 2 3 4 53 1 2 3Sample Output10156AuthorlcyRecommendJGShining解答：int main(){int a,b,i,j,l[1000],k;scanf("%d",&i);getchar();for(j=1;j<=i;j++)l[j]=0;for(j=1;j<=i;j++){scanf("%d",&a);getchar();for(k=1;k<=a;k++){scanf("%d",&b);getchar();l[j]+=b;}}for(j=1;j<=i-1;j++)printf("%d\n\n",l[j]);printf("%d\n",l[i]);}1176 免费馅饼Problem Description都说天上不会掉馅饼，但有一天gameboy正走在回家的小径上，忽然天上掉下大把大把的馅饼。