case 1 failed: runtime error: exit status 2
panic: runtime error: index out of range [-1]

goroutine 1 [running]:
main.main()
	/tmp/build-2069491270/solution.go:82 +0x948

input:
1
3 1
txh
1
1
9
3 1 3 1 3 2 2 2 1
exit status 1