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

#define FOR(i,s,e) for (int i = int(s); i != int(e); i++)
#define FORIT(i,c) for (typeof((c).begin()) i = (c).begin(); i != (c).end(); i++)
#define ISEQ(c) (c).begin(), (c).end()

int main(){
	int count1 = 0;
	int count25 = 0;
	int count100 = 0;

	cin >> count100 >> count25 >> count1;

	count25 +=  count1/25;
	count1 =count1%25;

	count100 +=  count25/4;
	count25 = count25%4;

	count100 = count100%10;

	int ans = count100+count25+count1;
	cout << ans <<  endl;
	return 0;
}