#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (n); ++i)

int main(void)
{
  int L, M, N;
  cin >> L >> M >> N;
  if (N >= 25)
  {
    M += N / 25;
    N %= 25;
  }
  if (M >= 4)
  {
    L += M / 4;
    M %= 4;
  }
  if (L >= 10)
  {
    L %= 10;
  }
  cout << L + M + N << endl;
  return 0;
}