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

int main(void) {
	int h, t, o;
	cin >> h >> t >> o;
	if (o >= 25) {
		t = o / 25;
		o %= 25;
	}
	if (t >= 4) {
		h = t / 10;
		t %= 10;
	}
	if (h >= 10)
		h %= 10;
	cout << o + t + h << endl;
	return 0;
}