from itertools import chain
 
def insert_file(filename):
    with open(filename, "w") as file:
        matrix = []
        for i in range(2):
            row = []
            for j in range(2):
                row.append(raw_input())
            matrix.append(row)
        file.write("\n".join(chain(*matrix)))
 
def read_file(filename):
    with open(filename, "r") as file:
        matrix = []
        for i in range(2):
            row = []
            for j in range(2):
                row.append(int(file.readline().strip()))
            matrix.append(row)
    return matrix
 
insert_file("data.txt")
data = read_file("data.txt")
 
print(data)

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

MQoyCjMKNA==

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