import java.util.ArrayDeque;
import java.util.Arrays;
import java.util.Queue;
import java.util.Scanner;


public class Main {
	private int a;
	private int b;
	private int c;
	
	public void setA(int a){
		this.a = a;
	}
	
	public void setB(int b){
		this.b = b;
	}
	
	public void setC(int c){
		this.c = c;
	}
	
	public int ans(){
		b += a / 25;
		a = a % 25;
		c += b / 4;
		b = b % 4;
		c = c % 10;
		return a + b + c;
	}
	
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		Main m = new Main();
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		m.setA(a);
		m.setB(b);
		m.setC(c);
		System.out.println(m.ans());
	}
}