#include <iostream>
#include <vector>
//#include <iomanip>

using namespace std;

int main()
{
	int Y1000 = 0, Y100, Y25, Y1;
	cin >> Y100 >> Y25 >> Y1;

	Y25 += Y1 / 25;
	Y1 %= 25;

	Y100 += Y25 / 4;
	Y25 %= 4;

	Y1000 += Y100 / 10;
	Y100 %= 10;

	cout << (Y100 + Y25 + Y1) << endl;

	return 0;
}