#include <stdio.h>
#include <algorithm>
#include <iostream>
#include <string>
#include <vector>
#include <functional>
#include <map>
#include <iomanip>
#include <math.h> 
#include <stack>
#include <queue>
#include <bitset>
#include <cstdlib>
#include <tuple>
#include <cctype>
#include <ctype.h>
#include <set>
#include <sstream>

using namespace std;


int main(){
	int i, j, k;
	int l, m, n;
	int k100 = 0, k25 = 0, k1 = 0;

	cin >> l >> m >> n;


	int kane = l * 100 + m * 25 + n;

	if (kane >= 1000) {
		kane %= 1000;
	}

	if (kane >= 100) {
		k100 = kane / 100;
	}

	kane %= 100;

	if (kane >= 25) {
		k25 = kane / 25;
	}

	kane %= 25;



	cout << k100 + k25 + kane << endl;







	getchar();
	getchar();
	return 0;
}