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

int main() {
	int l, m, n, c[3],ans, c_2;
	cin >> l;
	cin >> m;
	cin >> n;
	
	c[3] = n % 25;
	c_2 = ((n-c[3])/25 + m);
	c[2] = c_2 % 4;
	c[1] = ((c_2 - c[2])/4+l) % 10;
	
	ans = c[1] + c[2] + c[3];
	
	cout << ans << endl;
	
	return 0;
}