c#include <bits/stdc++.h> using namespace std; int main(){ ios::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); int N; cin >> N; N = 1000 - N; int ans = 0; int coin[6] = {500, 100, 50, 10, 5, 1}; for(int i = 0; i < 6; i++){ ans += N / coin[i]; N %= coin[i]; } cout << ans << "\n"; return 0; }