Why it wrong?

Question

#include <iostream>
using namespace std;

int main() {
//your code goes here
int max = 50;
int passengers;
cin >> passengers;
//m : max
//p : passengers
cout << max - (passengers - (max * (passengers / max)));//o its work

//m -{p - m(p÷m)}
//m-(p -mp)
//m-p+ mp

// cout << max -passengers + (max * passengers);//x wrong code
return 0;
}

Answer 1

Just do this nothing else.

cout << (max - passengers % max);