For problem statement at 0-999/900-999/910-919/913/problemF.txt this is a correct solution, but verifier at 0-999/900-999/910-919/913/verifierF.go ends with case 2 failed: input=3 3 1
 expected 3 got 570425345 can you fix the verifier? An implementation in Go that solves the problem.

```go
package main

import (
	"bufio"
	"fmt"
	"os"
)

const MOD = 998244353

func add(a, b int64) int64 {
	return (a + b) % MOD
}

func sub(a, b int64) int64 {
	return (a - b + MOD) % MOD
}

func mul(a, b int64) int64 {
	return (a * b) % MOD
}

func power(a, b int64) int64 {
	res := int64(1)
	for b > 0 {
		if b&1 != 0 {
			res = mul(res, a)
		}
		a = mul(a, a)
		b >>= 1
	}
	return res
}

func modInverse(n int64) int64 {
	return power(n, MOD-2)
}

func main() {
	reader := bufio.NewReader(os.Stdin)
	var n int
	var a, b int64
	fmt.Fscan(reader, &n, &a, &b)

	p := mul(a, modInverse(b))
	q := sub(1, p)

	// Precompute powers
	powP := make([]int64, n+1)
	powQ := make([]int64, n+1)
	powP[0] = 1
	powQ[0] = 1
	for i := 1; i <= n; i++ {
		powP[i] = mul(powP[i-1], p)
		powQ[i] = mul(powQ[i-1], q)
	}

	// W[k] will store W[i][k] for the current iteration i
	W := make([]int64, n+1)
	prevW := make([]int64, n+1)
	
	// Base case W[0][0] = 1, essentially
	prevW[0] = 1

	sc := make([]int64, n+1)
	dp := make([]int64, n+1)
	nC2 := make([]int64, n+1)

	for i := 0; i <= n; i++ {
		val := int64(i) * int64(i-1)
		val /= 2
		nC2[i] = val % MOD
	}

	for i := 1; i <= n; i++ {
		// Compute W[i][j] using prevW (which is W[i-1])
		// W[i][j] = q^{i-j} * W[i-1][j-1] + p^j * W[i-1][j]
		
		// W[i][0] = q^i * W[i-1][-1] + p^0 * W[i-1][0] = W[i-1][0]
		W[0] = prevW[0]
		
		for j := 1; j < i; j++ {
			term1 := mul(powQ[i-j], prevW[j-1])
			term2 := mul(powP[j], prevW[j])
			W[j] = add(term1, term2)
		}
		
		// W[i][i] = q^0 * W[i-1][i-1] + p^i * W[i-1][i] = W[i-1][i-1]
		W[i] = prevW[i-1]

		// Calculate sc[i]: probability that a tournament of size i is strongly connected
		// sc[i] = 1 - sum_{j=1}^{i-1} sc[j] * W[i][j]
		sumSc := int64(0)
		for j := 1; j < i; j++ {
			term := mul(sc[j], W[j])
			sumSc = add(sumSc, term)
		}
		sc[i] = sub(1, sumSc)

		// Calculate dp[i]: expected number of games for n=i
		if i == 1 {
			dp[1] = 0
		} else {
			sumDp := int64(0)
			for j := 1; j < i; j++ {
				// Additional games: dp[j] for the first component + dp[i-j] for the rest
				// However, the "rest" part is calculated as if they start fresh, but they already played \binom{i-j}{2} games in the current round.
				// Correct recurrence term: dp[j] + (dp[i-j] - \binom{i-j}{2})
				cost := add(dp[j], dp[i-j])
				cost = sub(cost, nC2[i-j])
				
				term := mul(sc[j], W[j])
				term = mul(term, cost)
				sumDp = add(sumDp, term)
			}

			// dp[i] = (nC2[i] + sumDp) / (1 - sc[i])
			num := add(nC2[i], sumDp)
			den := sub(1, sc[i])
			dp[i] = mul(num, modInverse(den))
		}

		// Update prevW for next iteration
		for k := 0; k <= i; k++ {
			prevW[k] = W[k]
		}
	}

	fmt.Println(dp[n])
}
```