import java.util.*;
import java.lang.*;
import java.io.*;

class Main {
    static class Coins{
        int c100; 
        int c25;
        int c1;
        Coins(int a, int b, int c){this.c100 = a; this.c25 = b; this.c1 = c;}
    }
    public static Coins oneToTwentyFive(Coins in) {
        return (new Coins(in.c100, in.c25 + (in.c1/25), in.c1%25));
    }
    public static Coins twentyFiveToHundred(Coins in){
        return new Coins(in.c100 + (in.c25/4), in.c25%4, in.c1);
    }
    public static Coins hundredToThousand(Coins in){
        return new Coins(in.c100%10, in.c25, in.c1);
    }
    public static int coinsToNum(Coins in){
        return in.c100 + in.c25 + in.c1;
    }
    public static void main (String[] args) {
        Scanner sc = new Scanner(System.in);
        Coins coins = new Coins(
        	Integer.parseInt(sc.next()),
        	Integer.parseInt(sc.next()),
        	Integer.parseInt(sc.next()));
        System.out.println(
            coinsToNum(hundredToThousand(twentyFiveToHundred(oneToTwentyFive(coins)))));
    }
}