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#!python
#
# Perl Weekly Challenge 266
# Task 2
#
# See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-266>
#
import sys
# task implementation
# the return value will be printed
def task_2( matrix ):
size = len( matrix[ 0 ] )
for row in range( 0, size ):
for col in range( 0, size ):
if row == col or col == size - row - 1:
if matrix[ row ][ col ] == 0:
return 'False'
elif matrix[ row ][ col ] != 0:
return 'False'
return 'True'
# invoke the main without the command itself
if __name__ == '__main__':
matrix = [
[1, 0, 0, 2],
[0, 3, 4, 0],
[0, 5, 6, 0],
[7, 0, 0, 1],
]
print( task_2( matrix ) )
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