#include <bits/stdc++.h>

using namespace std;

int main()

{

     long long a, b; cin >> a >> b; 

     if (b == 0) cout << - 1; 

    else if (a % b == 0) cout << "YES"; 

    else cout << "NO"; 

    return 0;

}

`@` Cách 1:

#include <bits/stdc++.h>
#define int long long
using namespace std;
signed main()
{
  int a, b; cin >> a >>b;
  if (a % b == 0) cout << "YES";
  else if (b == 0) cout << -1;
  else cout << "NO";
}

`@` Cách 2:

#include <bits/stdc++.h>
#define int long long
using namespace std;
string Check(int a, int b)
{
  if (b == 0) return "-1";
  else if (a % b == 0) return "YES";
  else return "NO";
}
signed main()
{
  int a, b; cin >> a >> b;
  cout << Check(a, b);
}

Chúc bn học tốt!

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