import java.util.Scanner;

class Question032
{
	public static void main(String[] args)
	{
	
		Scanner scan = new Scanner(System.in);
		
		int one = scan.nextInt();
		int tf = scan.nextInt();
		int oh = scan.nextInt();
		
		tf += one/25;
		one = one%25;

		oh += tf/4;
		tf = tf%4;

		oh = oh%10;

		System.out.println(one+tf+oh);
	}
}