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Time limit 2000/4000/4000/4000 ms. Memory limit 65000/65000/65000/65000 Kb.
Автор: Фёдор Меньшиков, ВГПУ.
Display box consisting of NxN cells filled with
numbers from 1 to N2 spiral (see examples).
Input
The first line contains a single number N
where 2 < N < 100.
Output
Show N numbers in N lines, separated by
spaces. It's not allowed to start in a different helix,
except for the upper left corner.
Spiral spinning counter-clockwise.
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Input 1
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Input 2
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Input 3
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3
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4
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5
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Output 1
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Output 2
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Output 3
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1 2 3
8 9 4
7 6 5
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1 2 3 4
12 13 14 5
11 16 15 6
10 9 8 7
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1 2 3 4 5
16 17 18 19 6
15 24 25 20 7
14 23 22 21 8
13 12 11 10 9
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Для отправки решений необходимо выполнить вход.
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