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

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

	L =L+ M / 4;
	M = M % 25;

	L = L % 10;
	ans = L + M + N;

	cout << ans << "\n";
	return 0;
}