#include <bits/stdc++.h> #define rep(i,n) for(int i=0;i<(int)(n);i++) #define all(x) x.begin(), x.end() #define MOD1 1LL<<61-1 #define MOD2 (1LL<<61)-1 #define MOD3 (1LL<<61-1) using namespace std; using ll=long long; using ld=long double; using P=pair<ll,ll>; //#include <atcoder/all> //using namespace atcoder; ////using mint=static_modint<998244353>; //using mint=static_modint<1000000007>; ////using mint=modint; //#pragma GCC target("avx2") //#pragma GCC optimize("O3") //#pragma GCC optimize("unroll-loops") int inf=2147483647; ll INF=9223372036854775807; const ld PI=acos(-1); void yn(bool f){ if(f)cout<<"Yes"<<endl; else cout<<"No"<<endl; return; } int main(){ int a,b,c,d;cin>>a>>b>>c>>d; if(a==0)cout<<d/b<<endl; else if(b==0)cout<<c/a<<endl; else cout<<min(c/a,d/b)<<endl; }