import java.util.Scanner;

public class Connect {

        public static String Con(String str1,String str2){

                return  str1+str2;

        }

        public static void main(String[] arg){

                Scanner sc = new Scanner(System.in);

                String str1 = sc.next();

                String str2 = sc.next();

                System.out.print(Con(str1, str2));

        }

}


 

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