#include <iostream>

using namespace std;

int main()
{
	int L, M, N;
	// L 100
	// M  25
	// N   1
	cin >> L >> M >> N;
	M += N / 25;
	N = N % 25;

	L += M / 4;
	M = M % 4;

	cout << L % 10 + M + N << endl;

	return 0;
}