For problem statement at 0-999/500-599/590-599/592/problemB.txt this is a correct solution, but verifier at 0-999/500-599/590-599/592/verifierB.go ends with All tests passed can you fix the verifier? An implementation in Go that solves the problem.

```go
package main

import (
	"fmt"
)

func main() {
	var n int64
	if _, err := fmt.Scan(&n); err != nil {
		return
	}
	ans := (n - 2) * (n - 2)
	fmt.Println(ans)
}
```