zoj2345

不难。

#include <iostream>using namespace std;int main(){    int num;    cin >> num;    while(num--)    {        int days;        while(cin >> days && days)        {            int coin = 0,upd = 1;            for(int m = 1;days >= upd;m++)            {                for(int k = 1;k<=m;k++,upd++)                {                    if(days >= upd)                        coin += m;                    else break;                }            }            cout << days << ' ' << coin << endl;        }        if(num != 0) cout << endl;    }    return 0;}