https://www.acmicpc.net/problem/4504
#include <iostream>
using namespace std;
int main() {
int n;
cin >> n;
while (true) {
int num;
cin >> num;
if (!num) break;
if (num % n == 0)
cout << num << " is a multiple of " << n << "." << endl;
else
cout << num << " is NOT a multiple of " << n << "." << endl;
}
return 0;
}