Mr. Osinski's Painting#11391

Mr. Osinski's Painting

1 second

256 megabytes

Very easy

Mr. Osinski painted a picture and named it "Snails in the Rain", and Rodik_R programmed it. Can you do it too? "Yes!" — the gnomes of group 5BSM answered in chorus and invite you to join in completing the following task: given a natural number $n$ , output an image that has $n$ rows and $2 n - 1$ 2n - 1 columns, formed by "snail" characters and the character '/', as shown in the example.

Input

A single natural number $n$ $(n > 1)$ (n > 1).

Output

Output an image of size $n \times (2 n - 1)$ n \times (2n - 1).

Examples

Example 1

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2 n - 1

(n > 1)

n \times (2 n - 1)