#include<bits/stdc++.h>//万能头
using namespace std;
int main(void){
    cin.tie(0);//代码优化
    ios::sync_with_stdio(false);//代码优化
    int a,b;cin>>a>>b;
    if(a>=b) b+=24;
    cout<<"O JOGO DUROU "<<b-a<<" HORA(S)"; 
}