[CodeCoach] How is my solution to Halloween Candy Wrong? (C++)

Question

I was trying to solve some "easy" code coach problems in this app, ok everything was cool until i tried to solve "Halloween Candy"

I used C++ (because that's my primary language) and I thought my solution was good enough but when I ran the code i solved case 1 & 2 but the other cases were wrong.
Oh, and all the cases i got wrong were LOCKED, so i couldn't see the problem.

Can anyone help me and tell me the problem in my code? :

#include <iostream>
#include <cmath>
using namespace std;

int main() {
double visited;
cin >> visited;
cout << round(100*2/visited);
return 0;
}

Answer 1

Pay attention to the detail of the task.

"rounded up to the nearest whole number"

Use the ceil function to round up, instead of round to the closest integer.