SPOJ Problem 3410:Feynman

水题,求1到n的平方和,直接代公式x=(1/6)*n*(n+1)*(2*n+1)

#include<cstdio>
#include<cstring>
int main(){
    int n,x;
    while(scanf("%d",&x)&&x){
        printf("%d\n",x*(x+1)*(2*x+1)/6);
    }
}
时间: 2024-10-15 04:24:17

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