import java.util.Scanner;

class S23_piggyBank{
  public static void main(String[] args){
    int sum = 0;
    int coin1, coin25, coin100 = 0;
    Scanner scn = new Scanner(System.in);

    coin1 = scn.nextInt();
    coin25 = scn.nextInt();
    coin100 = scn.nextInt();

    sum += coin1 % 25;
    coin25 += coin1 / 25;

    sum += coin25 % 4;
    coin100 += coin25 / 4;

    sum += coin100 % 10;

    System.out.println(sum);
  }
}