c#include <bits/stdc++.h> using namespace std; int main(){ cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(false); int wc, hc, ws, hs; cin >> wc >> hc >> ws >> hs; if(ws + 2 <= wc && hs + 2 <= hc){ cout << 1 << "\n"; }else{ cout << 0 << "\n"; } return 0; }