const MOD: usize = 998244353; fn main() { let (n, p) = input_tuple(); let mut p_pow: usize = p; let mut count = 0; while n >= p_pow { count += n / p_pow; p_pow *= p; } let result = power(p, count, MOD); println!("{}", result); } fn input_tuple() -> (T, T) where T: std::str::FromStr, ::Err: std::fmt::Debug, { let stdin = std::io::stdin(); let mut buf = String::new(); stdin.read_line(&mut buf).unwrap(); buf = buf.trim_end().to_owned(); let mut iter = buf.split_whitespace(); let n = iter.next().unwrap().parse().unwrap(); let m = iter.next().unwrap().parse().unwrap(); (n, m) } fn power(x: usize, n: usize, modulo: usize) -> usize { if n == 0 { return 1; } let mut result = power(x * x % modulo, n / 2, modulo); if n % 2 != 0 { result = result * x % modulo; } result }