

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
	public static void main(String [] args) throws IOException {
		BufferedReader br = new BufferedReader (new InputStreamReader(System.in));
		 int n =Integer.valueOf(br.readLine());
	     int z =Integer.valueOf(br.readLine());
		 
		 if(n==1) {
			 if(z==2) {
				 System.out.print("3");
			 }
			 else if(z==3) {
				 System.out.print("2");
			 }
		 }else if(n==2) {
			 if(z==1) {
				 System.out.print("3");
			 }
			 else if(z==3) {
				 System.out.print("1");
			 }
		 }else if(n==3) {
			 if(z==1) {
				 System.out.print("2");
			 }
			 else if(z==2) {
				 System.out.print("1");
			 }
		 }
	}

}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz