#include <bits/stdc++.h>
using namespace std;
using ll = long;
int main() {
  ll ans = 0, last = 0;
  for (ll i = 0; i < 5; i++) {
    ll a;
    cin >> a;
    ans += (a + 9) / 10;
    last = max(last, (1000 - a) % 10);
  }
  cout << ans - last;
}
