标签：2014acm上海赛区网络赛   水题   数学   算法   

题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=5053

the Sum of Cube

2
1 3
2 5

Case #1: 36
Case #2: 224

一道送分题，不过要小心中间过程溢出。。。

//#pragma comment(linker, "/STACK:36777216")
#include <functional>
#include <algorithm>
#include <iostream>
#include <fstream>
#include <sstream>
#include <iomanip>
#include <numeric>
#include <cstring>
#include <climits>
#include <cassert>
#include <complex>
#include <cstdio>
#include <string>
#include <vector>
#include <bitset>
#include <queue>
#include <stack>
#include <cmath>
#include <ctime>
#include <list>
#include <set>
#include <map>
using namespace std;
int main(){
    #ifdef ONLINE_JUDGE
    #else
        freopen("in.txt","r",stdin);
    #endif
    int T,kase=0;
    scanf("%d",&T);
    while(T--){
        printf("Case #%d: ",++kase);
        long long A,B;
        scanf("%I64d%I64d",&A,&B);
        long long sum=0;
        long long sum1=(A-1)*(A)/2;
        sum1=sum1*sum1;
        long long sum2=(B)*(B+1)/2;
        sum2=sum2*sum2;
        cout<<sum2-sum1<<endl;
    }
    return 0;
}

hdu 5053 the Sum of Cube---2014acm上海赛区网络赛

标签：2014acm上海赛区网络赛   水题   数学   算法   

原文地址：http://blog.csdn.net/asdfghjkl1993/article/details/39615445