#include <iostream>
#include <sstream>
#include <string>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <vector>
#include <array>
#include <memory>
#include <algorithm>

namespace Util
{

std::vector<std::string> Split(const std::string& str, const char delim);
std::string Itos(const int value);
std::string Ftos(const double value);
int Stoi(const std::string& buf);
double Stof(const std::string& buf);
std::vector<int> ConvertInt(const std::vector<std::string>& vecBuf);
std::vector<double> ConvertDouble(const std::vector<std::string>& vecBuf);

}// namespace Util


int main()
{
	// 入出力の速度向上
	std::cin.tie(0);
	std::ios::sync_with_stdio(false);

	std::string buf;
	std::vector<std::string> vecBuf;

	const std::array<int, 4> Coin = {1, 25, 100, 1000};
	std::vector<int> wallet(Coin.size());

	for(int count = 0; count < 3; ++count)
	{
		std::getline(std::cin, buf);
		wallet[2 - count] = Util::Stoi(buf);
	}

	int numCoin = 0;

	for(int cur = 0; cur < static_cast<int>(wallet.size()) - 1; ++cur)
	{
		while(Coin[cur + 1] / Coin[cur] <= wallet[cur])
		{
			wallet[cur] -= Coin[cur + 1] / Coin[cur];
			++wallet[cur + 1];
		}

		numCoin += wallet[cur];
	}

	printf("%d\n", numCoin);


	return 0;
}


namespace Util
{

std::vector<std::string> Split(const std::string& str, const char delim)
{
	std::istringstream iss(str);
	std::vector<std::string> ret;
	std::string tmp;

	while(std::getline(iss, tmp, delim))
	{
		ret.push_back(tmp);
	}

	return ret;
}

std::string Itos(const int value)
{
	std::ostringstream ostream;
	ostream << value;
	return ostream.str();
}

std::string Itof(const double value)
{
	std::ostringstream ostream;
	ostream << value;
	return ostream.str();
}

int Stoi(const std::string& buf)
{
	return std::atoi(buf.c_str());
}

double Stof(const std::string& buf)
{
	return std::atof(buf.c_str());
}

std::vector<int> ConvertInt(const std::vector<std::string>& vecBuf)
{
	std::vector<int> ret(vecBuf.size());

	for(int cur = 0; cur < static_cast<int>(ret.size()); ++cur)
	{
		ret[cur] = Stoi(vecBuf[cur]);
	}

	return ret;
}

std::vector<double> ConvertDouble(const std::vector<std::string>& vecBuf)
{
	std::vector<double> ret(vecBuf.size());

	for(int cur = 0; cur < static_cast<int>(ret.size()); ++cur)
	{
		ret[cur] = Stof(vecBuf[cur]);
	}

	return ret;
}

}// namespace Util