#include <iostream>

using namespace std;

int main(int argc, const char* argv[])
{
	int L, M, N;
	cin >> L >> M >> N;
	M += N / 25;
	N %= 25;
	L += M / 4;
	M %= 4;
	L %= 10;
	cout << N + M + L << endl;
	return 0;
}