#include <iostream>
#include <algorithm>
#include <vector>
#include <string>
#include <iomanip>
#include <cmath>
using namespace std;
#define diff(x,y) ((x > y) ? (x - y) : (y - x))

int main() {
	int l, m, n;
	cin >> l >> m >> n;
	m += n / 25;
	n %= 25;
	l += m / 4;
	m %= 4;
	l %= 10;
	//cout << l << " " << m << " "<< n << endl;
	cout << l + m + n << endl;
}