#include <iostream>
#include <algorithm>
#include <string> 
#include <vector>
#include <iomanip>
using namespace std;

int main()
{
	int L, M, N;
	cin >> L >> M >> N;
	int money = 100 * L + 25 * M + N;
	int total = 0;
	while (money >= 1000) {
		money = money - 1000;
	}
	while (money >= 100) {
		total = total + 1;
		money = money - 100;
	}
	while (money >= 25) {
		total = total + 1;
		money = money - 25;
	}
	cout << money + total << endl;
	return 0;
}