For problem statement at 0-999/200-299/220-229/226/problemA.txt this is a correct solution, but verifier at 0-999/200-299/220-229/226/verifierA.go ends with All 105 tests passed can you fix the verifier? package main
import "fmt"
func pow(base, exp, mod int64) int64 {
	var res int64 = 1
	base %= mod
	for exp > 0 {
		if exp%2 == 1 {
			res = (res * base) % mod
		}
		base = (base * base) % mod
		exp /= 2
	}
	return res
}
func main() {
	var n, m int64
	if _, err := fmt.Scan(&n, &m); err == nil {
		fmt.Println((pow(3, n, m) - 1 + m) % m)
	}
}