why c++ 救

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int o;
    cin >> o;
    o /= 52;
    for(int i = 100;i > 0;i--)
    {
        int k = o - i * 7;
        if(k % 21 == 0 && k!=0)
        {
            k /= 21;
            cout << i << endl;
            cout << k;
            break;
        }
    }
}