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#!/usr/bin/env python3
import json
import sys
def x_matrix(matrix: list) -> bool:
"""Determine if the matrix is a X Matrix
Args:
matrix (list): The supplied matrix
Returns:
bool: Wether the matrix as a X Matrix or not
"""
rows = len(matrix)
# Check we have a square
for row in range(rows):
if len(matrix[row]) != rows:
raise ValueError("Please specify a square matrix")
# Check that all the values are correct
for row in range(rows):
for col in range(rows):
if col == row or col == rows - 1 - row:
# We are expecting a non-zero value
if matrix[row][col] == 0:
return False
elif matrix[row][col] != 0:
# We are expecting a zero value
return False
return True
def main():
# Parse the matrix from the input
matrix = json.loads(sys.argv[1])
result = x_matrix(matrix)
print('true' if result else 'false')
if __name__ == '__main__':
main()
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