Problem

10 /12


Honorary units

Problem

The input is a number n. Print an array of size n by n, in which the lines with even indices contain 1, and the rest — zeros.
 
Examples
# Input Output
1 5 [[1 1 1 1 1]
 [0 0 0 0 0]
 [1 1 1 1 1]
 [0 0 0 0 0]
 [1 1 1 1 1]]

time 1000 ms
memory 256 Mb
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