#include <bits/stdc++.h>
using namespace std;
int main() {
  int k = 9, s = 0;
  for (int j = 0; j < 5; j++) {
    int a;
    cin >> a;
    if (a % 10 == 0)
      s += a;
    else if (a % 10 <= k % 10) {
      k = a;
      s += a / 10 * 10 + 10;
    } else
      s += a / 10 * 10 + 10;
  }
  s = s - (k / 10 * 10 + 10) + k;
  cout << s << endl;
  return 0;
}
