###
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]] |

Запрещенные операторы: `if`

; `for`

; `while`

; `do`