#include<stdio.h>

int main()
{
    int day;
    while(scanf("%d", &day), day)
    {
        int n = 1;
        while((1+n)*n/2 < day) n++;
        printf("%d %ld\n", day, (n-1)*n*(2*n-1)/6 + n*(day-(n-1)*n/2));
    }
    return 0;
}

• Re:平方和公式犀利 (42) hustcswgy 2011-07-27 19:32:50
• Re:平方和公式犀利 (273) ziqiangyeah 2013-08-02 17:03:59
  • Re:平方和公式犀利 (6) ziqiangyeah 2013-08-02 17:04:18