#include <iostream>

using namespace std;

int main(){
  int totalCoin = 0;
  int l,m,n;
  cin >> l >> m >> n;
  totalCoin = l + m + n;
  int paper = 0;
  while(n >= 25){
    n -= 25;
    m++;
    totalCoin -= 25;
    totalCoin++;
  }
  while(m >= 4){
    m -= 4;
    l++;
    totalCoin -= 4;
    totalCoin++;
  }
  while(l >= 10){
    l -= 10;
    paper++;
    totalCoin -= 10;
  }
  cout << totalCoin << endl;
  return 0;
}