Cat Watch

package main

import (
  "fmt"
  "strings"
)

func main() {
    var n int
    fmt.Scanln(&n)

    for i := 1; i <= n - 2; i++ {
        fmt.Printf("%s||%s||%s\n", strings.Repeat(" ", n), strings.Repeat("_", n - 2), strings.Repeat(" ", n))
    }

    fmt.Printf("%s//%s\\\\%s\n", strings.Repeat(" ", n - 1), strings.Repeat(" ", n), strings.Repeat(" ", n - 1))

    for i := 1; i <= n - 4; i++ {
        if i == (n - 3) / 2 {
            fmt.Printf("%s||%s||]\n", strings.Repeat(" ", n - 2), strings.Repeat("_", n + 2))
        } else {
            fmt.Printf("%s||%s||\n", strings.Repeat(" ", n - 2), strings.Repeat("_", n + 2))
        }
    }

    fmt.Printf("%s\\\\%s//%s\n", strings.Repeat(" ", n - 1), strings.Repeat(" ", n), strings.Repeat(" ", n - 1))

    for i := 1; i <= n - 2; i++ {
        fmt.Printf("%s||%s||%s\n", strings.Repeat(" ", n), strings.Repeat("_", n - 2), strings.Repeat(" ", n))
    }
}