#define _CRT_SECURE_NO_WARNINGS
#define _USE_MATH_DEFINES
#include <iostream>
#include <map>
#include <list>
#include <cstdio>
#include <cmath>
#include <cstring>
#include <string>
#include <vector>
#include <algorithm>
#include <utility>
#include <queue>
#include <iomanip>
#define INF 1050000000

using namespace std;

int main(void)
{
	int l, m, n;
	int sum;
	int cnt = 0;

	cin >> l >> m >> n;

	sum = l * 100 + 25 * m + n;
	sum %= 1000;
	cnt += sum / 100;
	sum %= 100;
	cnt += sum / 25;
	sum %= 25;
	cnt += sum;

	cout << cnt << endl;
}