#include<stdio.h>
#include<math.h>
void main(){
	int i,n,sum,sum1=0;
	for(;;){
		scanf("%d",&n);
		if(n==0) break;
		sum=0;
		for(i=1;i<n;i++){
			sum=sum+i*i;
			if(n==(i*i+i)/2){ 
				sum1=sum;
			}
			else if(n>(i*i-i)/2&&n<=(i*i+i)/2){
				sum1=sum-((i*i+i)/2-n)*i;
			}
		}
		printf("%d %d\n",n,sum1);
	}
}

• Re:为什么wrong answer? (17) zgalss 2007-07-15 09:40:45