#include <algorithm>
#include <iostream>
#include <iomanip>
#include <climits>
#include <string>
#include <vector>
#include <cmath>
#include <set>
#include <map>
using namespace std;
using ll = long long;

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