#include <bits/stdc++.h>
int main() {
  std::vector<int> ABC(5);
  for (auto &abc : ABC) std::cin >> abc;
  int min_10 = 9;
  int sum = 0;
  for (auto &abc : ABC) {
    int mod = abc % 10;
    if (mod < min_10) min_10 = mod;
    sum += ((abc + 9) / 10) * 10;
  }
  if (min_10 != 0) sum += min_10 - 10;
  std::cout << sum << std::endl;
  return 0;
}
