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

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int A,B,C,D; cin >> A >> B >> C >> D;
    int day = 31-A+B;
    if(day >= C) cout << 1 << endl;
    else if(day >= D) cout << 2 << endl;
    else cout << 3 << endl;
}