#include<iostream>
#include<algorithm>
#include<cmath>
using namespace std;
 
int main() {
  int a, b;
  cin >> a >> b;
  int cnt = 3;
  for (int i = 0; i <= b; i++) {
    if (i == 23 || i == 24 || i == 25)
    cnt--;
  }
  cout << cnt << endl;
  return 0;
  }