#include <iostream>
using namespace std;

int main()
{
	int L, M, N;

	cin >> L >> M >> N;

	if (N >= 25)
	{
		M += N / 25;
		N = N % 25;
	}

	if (M >= 4)
	{
		L += M / 4;
		M = M % 4;
	}

	if (L >= 10)
	{
		L = L % 10;
	}

	cout << N + M + L<<endl;

}