using System;

class Program

{ static void Main(string[] args)

    {

    int a,b,c; string s;

    s = Console.ReadLine(); a = int.Parse(s);

    s = Console.ReadLine(); b = int.Parse(s);

    Console.WriteLine("старо a={0}\n старо b={1}",a , b);

    c = a; a = b; b = c;

    Console.WriteLine("ново a = {0}\n ново b ={1}", a , b); 

    }

}