hdu 2942 Pairs

//英语又没学好，题意是将n分成n/2份，判断n/2份都相等吗#include<iostream>using namespace std;int a[1002];int main(){int n, i, sum=0;while(scanf("%d", &n) != EOF && n){for( i=0; i < n; i++ )scanf("%d", a+i);int temp;if(n % 2){printf("No\n");continue;}temp = a[0] + a[n-1];for( i=1; i < n/2; i++ ){if(a[i] +a[n-i-1] != temp)break;}if(i == n/2)printf("Yes\n");elseprintf("No\n");}return 0;}