#include <iostream>
#include <algorithm>
using namespace std;


int main(){
    int a, b, c;
  	cin >> a >> b >> c;
  	b = b + c / 25;
  	c = c % 25;
    a = a + b / 4;
    b = b % 4;
  	a = a % 10;
    cout << a + b + c << endl;
	
    return 0;
}