#include <bits/stdc++.h>
using namespace std;
int main() {
  vector<int> a(5);
  int minimam = 10;
  int sums = 0;
  for (int i = 0; i < 5; i++) {
    cin >> a[i];
    minimam = min(minimam, a[i] % 10);
    sums += 10 * ceil(float(a[i]) / 10.0);
  }
  sums = sums - 10 + minimam;
  cout << sums << endl;
  return 0;
}
