import java.util.Scanner;
import java.util.ArrayList;
import java.lang.String;
import java.lang.Integer;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        Integer _1000 = 0;
        Integer _100 = sc.nextInt();
        Integer _25 = sc.nextInt();
        Integer _1 = sc.nextInt();
        int bSum = _1 + _25*25 + _100*100;
        int count = 0;
        
        if (_1/25 > 0){
            _25 += _1/25;
            _1 = _1%25;
        }
        if (_25/4 > 0 ){
            _100 += _25/4;
            _25 = _25%4;
        }
        if (_100/10 > 0){
            _1000 += _100/10;
            _100 = _100%10;
        }
        int aSum = _1 + _25*25 + _100*100 + _1000 * 1000;
        if (aSum != bSum) {
            System.out.println("!");
        }
        count = _1 + _25 + _100;
        System.out.println(count);
    }
}