#include <bits/stdc++.h>
using namespace std;
int main() {
  int S[5], A[5], ans = 0;
  int Q = 1000000;
  cin >> S[0] >> S[1] >> S[2] >> S[3] >> S[4];
  if (S[0] % 10 == 0 && S[1] % 10 == 0 && S[2] % 10 == 0 && S[3] % 10 == 0 &&
      S[4] % 10 == 0)
    ans += 10;
  for (int i = 0; i < 5; ++i) {
    A[i] = (S[i] + 9) / 10 * 10;
    ans += A[i];
    Q = min(Q, S[i] % 10);
  }
  ans -= 10;
  ans += Q;
  cout << ans << endl;
}
