#include<bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef vector<int> vi;

#define INF 1000000000

int main () {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
  int h, u, d, f, i = 1;
	while(cin >> h >> u >> d >> f) {
    vi v(100);
    v[i] = h - 



	}
}