panic: runtime error: index out of range [3] with length 3

goroutine 1 [running]:
main.simulate({{0xfcb97, 0x7}, 0x4, 0x4, {0x40000b4100, 0x4, 0x4}}, 0xffffffffffffffff, 0x3, 0x2, ...)
	/home/ubuntu/codeforces/2000-2999/2000-2099/2040-2049/2045/verifierM.go:257 +0x2d8
main.evaluate({{0xfcb97, 0x7}, 0x4, 0x4, {0x40000b4100, 0x4, 0x4}})
	/home/ubuntu/codeforces/2000-2999/2000-2099/2040-2049/2045/verifierM.go:174 +0xb0
main.main()
	/home/ubuntu/codeforces/2000-2999/2000-2099/2040-2049/2045/verifierM.go:56 +0x34c
exit status 2