A + B

aplusb

import java.util.Scanner;
import java.util.Arrays;
import java.io.*;

public class aplusb {
	public static void main (String [] args) throws IOException {
 
InputStreamReader inStream = new InputStreamReader(System.in);
	    BufferedReader systemIn = new BufferedReader(inStream);

		String str = systemIn.readLine();

String[] str_array = str.split(" ");
String stra = str_array[0]; 
String strb = str_array[1];

int a = Integer.parseInt(stra);
int b = Integer.parseInt(strb);

if (1 <= a && b <= 50) {
	int sum = a + b;

	System.out.println(sum);


}
else if (1 > a && b > 50) {
	System.out.println("not valid");
}

}
}