#include<iostream>

using namespace std;

int main(){
  int l,m,n;
  cin >> l >> m >> n;
  while(n >= 25){
    n -= 25;
    m += 1;
  }
  while(m >= 4){
    m -= 4;
    l += 1;
  }
  while(l >= 10){
    l -= 10;
  }
  cout << l + m + n << endl;
}