#include <bits/stdc++.h>
using namespace std;
int main() {
  int A, B, C, D, E;
  cin >> A >> B >> C >> D >> E;
  int a, b, c, d, e, ans;
  a = A % 10;
  b = B % 10;
  c = C % 10;
  d = D % 10;
  e = E % 10;
  ans = A + B + C + D + E + a + b + c + d + e;
  cout << ans << endl;
}
