olimpapa

#include <iostream>

using namespace std;

int A, B, H, Buff;

int main()
{
    cin >> H;
    cin >> A;
    cin >> B;
    Buff = H - A;
    Buff = Buff + B;
    while(Buff < 0)
    {
      Buff+=24;
    }
    while(Buff > 23)
    {
      Buff-=24;
    }
    cout << Buff;
}