Problem:
Score : 100 points

Problem Statement

We have an N \times N square grid.

We will paint each square in the grid either black or white.

If we paint exactly A squares white, how many squares will be painted black?

Constraints

1 \leq N \leq 100

0 \leq A \leq N^2

Inputs

Input is given from Standard Input in the following format:

N
A

Outputs

Print the number of squares that will be painted black.

Sample Input 1

3
4

Sample Output 1

5

There are nine squares in a 3 \times 3 square grid.
Four of them will be painted white, so the remaining five squares will be painted black.

Sample Input 2

19
100

Sample Output 2

261

Sample Input 3

10
0

Sample Output 3

100

As zero squares will be painted white, all the squares will be painted black.

Solution in Perl (v5.18.2) (judge verdict: Wrong Answer)

# このファイルは，UTF-8 で書かれている．
use strict;
use warnings;
use utf8;
use open IO => ":encoding(UTF-8)";
use open ":std";
# 以上はテンプレートである．編集しないこと．

my $N = <STDIN>;
chomp($N);
my $A = <STDIN>;
chomp($A);

print $N*$N + $A, "\n"