import java.util.Scanner;

class No0032{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		int a100 = sc.nextInt();
		int a025 = sc.nextInt();
		int a001 = sc.nextInt();
		
		if(a001 / 25 > 0){
			a025 += a001 / 25;
			a001 %= 25;
		}
		if(a025 / 4 > 0){
			a100 += a025 / 4;
			a025 %= 4;
		}
		if(a100 / 10 > 0){
			a100 %= 10;
		}
		
		int result = a001 + a025 + a100;
		System.out.println(result);
	}
}