import java.util.Scanner;
                class check_consecutive { 
                public static void main(String s[] )
                   {
                       Scanner in = new Scanner(System.in);
                       System.out.print("Input the first number: ");
                       int x = in.nextInt();
                       System.out.print("Input the second number: ");
                       int y = in.nextInt();
                       System.out.print("Input the third number: ");
                       int z = in.nextInt();
                       System.out.print("The three given numbers are consecutive(true or false) : ") ;
                       System.out.println(test(x,y,z));
                       }
               
                public static boolean test(int x, int y, int z){
                   int max_num = Math.max(x, Math.max(y, z));
                   int min_num = Math.min(x, Math.min(y, z));
                   int middle_num = x+y+z - max_num - min_num;
                   return (max_num - middle_num) == 1 && (middle_num - min_num == 1);
                 }
               }