题解 | #又一版 A+B#

#include <iostream>
#include <algorithm>
using namespace std;



int main() {
    long long a, b, c;
    int m;
    while (cin >> m && m != 0) {
        cin >> a >> b;
        c = a + b;
        string res = "";
        
        do {
            res += c % m + '0';
            c = c / m;
        } while (c != 0);
        reverse(res.begin(), res.end());
        cout << res << endl;
    }
    return 0;
}