#include <iostream>
using namespace std;
int main()
{
	int L, M, N;

	cin >> L >> M >> N;

	M = M + (N / 25);
	N = N % 25;

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

	L = L % 10;

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

	return 0;
}