#include <iostream>
#include <vector>
#include <cstdio>
#include <sstream>
#include <map>
#include <string>
#include <algorithm>
#include <queue>
#include <cmath>
#include <set>
using namespace std;

int x[] = {1000,100,25,1};

int main(){
	int l,m,n;
	cin >> l >> m >> n;
	int sum = l*100 + m*25 + n;

	

	int ans = 0;
	for(int i=0; i<4; i++){
		if(i>0) ans += sum/x[i];
		sum %= x[i];
		
	}

	cout << ans << endl;
	return 0;
}