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import math
import os
import random
import re
import sys
first_multiple_input = input().rstrip().split()
n = int(first_multiple_input[0])
m = int(first_multiple_input[1])
matrix = []
pattern = r"(?<=[A-Za-z0-9])[^A-Za-z0-9]+(?=[A-Za-z0-9])"
for _ in range(n):
matrix_item = input()
matrix.append(matrix_item)
zipped = list(zip(*matrix))
final = "".join(ch for tup in zipped for ch in tup)
output = re.sub(pattern," ",final)
print(output)
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Matrix Script
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!/bin/python3
import math import os import random import re import sys
first_multiple_input = input().rstrip().split()
n = int(first_multiple_input[0])
m = int(first_multiple_input[1])
matrix = [] pattern = r"(?<=[A-Za-z0-9])[^A-Za-z0-9]+(?=[A-Za-z0-9])" for _ in range(n): matrix_item = input() matrix.append(matrix_item) zipped = list(zip(*matrix)) final = "".join(ch for tup in zipped for ch in tup)
output = re.sub(pattern," ",final) print(output)