#include <iostream>
using namespace std;
int main()
{
	int total, L, M, N,O;
	total =L = M = N = O = 0;
	cin >> L >> M >> N;
	int tN = N * 1;
	while (tN > 0) 
	{
		if (tN >= 25)
		{
			tN -= 25;
			if (tN < 0) { break; }
			N-=25;
			M++;
		}
		else
		{
			break;
		}
	}

	int tM = M * 25;
	while (tM > 0)
	{
		if (tM >= 100)
		{
			tM -= 100;
			if (tM < 0) { break; }
			M-=4;
			L++;
		}
		else
		{
			break;
		}
	}

	int tL = L * 100;
	while (tL > 0)
	{
		if (tL >= 1000)
		{
			tL -= 1000;
			if (tL < 0) { break; }
			L-=10;
		}
		else
		{
			break;
		}
	}

	total = L + M + N;

	cout << total << endl;

	return 0;
}