poj 2000（水题）

#include<iostream>
#include<cstdio>
using namespace std;
int main(){
    int n,sum,i,j,t;
    while(scanf("%d",&n)&&n){
        i=1;
        while(i*(i+1)/2<n)i++;
        i--;
        sum = 0;
        for(j=1;j<=i;j++){
            sum += j*j;
        }
        int t = n-i*(i+1)/2;
        sum += t*j;
        printf("%d %d\n",n,sum);
    }
    return 0;
}