15964번 '이상한 기호'

	import java.util.*;
	import java.io.*;
	class Main {
	public static void main(String[] args) throws IOException {
	BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
	String[] input = in.readLine().split(" ");
	long a = Integer.parseInt(input[0]);
	long b = Integer.parseInt(input[1]);
	System.out.println((a+b)*(a-b));
	}
	}

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EASY

 

	let input = readLine()!.split(separator: " ").map { Int($0)! }
	let a = input.first!
	let b = input.last!
	print((a+b)*(a-b))

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