For problem statement at 1000-1999/1200-1299/1220-1229/1221/problemB.txt this is a correct solution, but verifier at 1000-1999/1200-1299/1220-1229/1221/verifierB.go ends with reference failed on test 1 (n1): runtime error: exit status 1
stat /home/ubuntu/codeforces/1000-1999/1200-1299/1220-1229/1221/1000-1999/1200-1299/1220-1229/1221/1221B.go: no such file or directory

input:
1
exit status 1 can you fix the verifier? package main

import (
	"fmt"
)

func main() {
	var n int
	fmt.Scan(&n)
	for i := 0; i < n; i++ {
		for j := 0; j < n; j++ {
			if (i+j)%2 == 0 {
				fmt.Print("W")
			} else {
				fmt.Print("B")
			}
		}
		fmt.Println()
	}
}