[Codeforces Round #156 (Div. 2)]A. Greg's Workout

地址：http://codeforces.com/contest/255/problem/A

三种运动，循环锻炼，看哪一种锻炼的最多

#include<stdio.h>
#include<stdlib.h>

int n,e[3];
char a[3][9]={"chest\0","biceps\0","back\0"};

int main()
{
    int i,in,max=0,ans=0;
    scanf("%d",&n);
    for(i=0;i<n;i++)
    {
        scanf("%d",&in);
        e[i%3]+=in;
    }
    for(i=0;i<3;i++)
    {
        if(e[i]>ans)
        {
            max=i;
            ans=e[i];
        }
    }
    printf("%s\n",a[max]);
    return 0;
}