#include <bits/stdc++.h>

using namespace std;

int main()
{
  int L, M, N, K = 0;
  cin >> L >> M >> N;

  M += N / 25;
  L += M / 4;
  K += L / 10;

  cout << L % 10 + M % 4 + N % 25 << endl;
}