#include "bits/stdc++.h"
using namespace std;

#define int long long

void solve(){
    int a, b;
    cin >> a >> b;
    int ans = 23;
    if (a > 8 or (a == 8 and b >= 22)) ans++;
    cout << ans;
}

signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    
    int T = 1;
    // cin >> T;
    while(T--) solve();

    return 0;
}