#include <iostream>
using namespace std;
int main()
{
    int a, b;
    cout << "Nhap vao a= ";
    cin >> a;
    cout << "Nhap vao b= ";
    cin >> b;
    if (a % b == 0)
    {
        cout << b << " la uoc cua " << a;
    }
    else if (a % b != 0)
    {
        cout << b << " khong la uoc cua " << a;
    }
    else if (b % a == 0)
    {
        cout << a << " la uoc cua " << b;
    }
    else
    {
        cout << a << " khong la uoc cua " << b;
    }
}