#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c, d, e, k, l, m, n;
  cin >> a >> b >> c >> d >> e;
  if (a % 10 != 0) {
    while (a % 10 == 0) {
      a++;
    }
  }
  k = a + b;
  if (k % 10 != 0) {
    while (k % 10 == 0) {
      k++;
    }
  }
  l += c;
  if (l % 10 != 0) {
    while (l % 10 == 0) {
      l++;
    }
  }
  m += d;
  if (m % 10 != 0) {
    while (m % 10 == 0) {
      m++;
    }
  }
  n += e;
  cout << n << endl;
}
