题解 | Old Bill

#include <iostream>
#include <algorithm>
#include <cstdio>
#include <string>

using namespace std;

int n, x, y, z;

int main() {
    cin >> n >> x >> y >> z;
    int fir = 1, las = 0;
    int ma = 0, count = 0;
    for (int i = 1; i < 10; i++) {
        for (int j = 0; j < 10; j++) {
            if ((i * 10000 + x * 1000 + y * 100 + z * 10 + j) % n == 0){
                count++;
                if((i * 10000 + x * 1000 + y * 100 + z * 10 + j) > ma) {
                    ma = i * 10000 + x * 1000 + y * 100 + z * 10 + j;
                    fir = i;
                    las = j;
                }
            }
        }
    }
    if (count > 0) cout << fir << " " << las << " " << ma / n << endl;
    else cout << 0 << endl;
    return 0;
}