Task

import java.util.Scanner;

class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int a = scanner.nextInt();
        boolean flag = false;
        boolean asc = true;
        while(scanner.nextInt() != 0)
        {
            int b = scanner.nextInt();
            if (b >= a && asc == true)
            {
                a = b;
                flag = true;
                asc = true;
                continue;
            }
            else
            {
                asc = false;
            }
            if (b <= a && asc == false)
            {
                a = b;
                flag = true;
                continue;
            }
            else
            {
                flag = false;
                break;
            }
        }
        System.out.println(flag);
    }
}