#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
  vector<ll> vec(5);
  ll b = 10;
  for (ll i = 0; i < 5; i++) {
    ll c;
    cin >> c;
    vec.at(i) = ((c - 1) / 10 + 1) * 10;
    b = min(b, c % 10);
  }
  ll s = 0;
  for (ll i = 0; i < 5; i++) {
    s += vec.at(i);
  }
  s -= 10 - b;
  cout << s << endl;
  return 0;
}
