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- #!/bin/python3
- import math
- import os
- import random
- import re
- import sys
- #
- # Complete the 'diagonalDifference' function below.
- #
- # The function is expected to return an INTEGER.
- # The function accepts 2D_INTEGER_ARRAY arr as parameter.
- #
- def diagonalDifference(arr):
- primary=0
- secondary=0
- for i in range(0,n):
- primary+=arr[i][i]
- secondary+=arr[i][n-i-1]
- return abs(primary-secondary)
- if __name__ == '__main__':
- fptr = open(os.environ['OUTPUT_PATH'], 'w')
- n = int(input().strip())
- arr = []
- for _ in range(n):
- arr.append(list(map(int, input().rstrip().split())))
- result = diagonalDifference(arr)
- fptr.write(str(result) + '\n')
- fptr.close()
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