#include<bits/stdc++.h>
using namespace std;
int main()
{
	int a=0,b=0,c=0,n=0;
	cin>>a>>b; 
	if(a==b)
	{
		cout<<24;
	}
	else if(a<b)
	{
		c=b-a;
		cout<<c; 
	}
	else if(a>b)
	{
		c=24-a+b;
		cout<<c;
	}
	
	
	
	
	
	
	
	
	return 0;
}