c#include <bits/stdc++.h> using namespace std; int main() { cin.tie(NULL); cout.tie(NULL); ios_base::sync_with_stdio(false); int L, A, B, C, D; cin >> L >> A >> B >> C >> D; int kor = A / C; int math = B / D; if(A % C){ kor++; } if(B % D){ math++; } cout << L - max(kor, math) << "\n"; return 0; }