For problem statement at 0-999/800-899/800-809/803/problemE.txt this is a correct solution, but verifier at 0-999/800-899/800-809/803/verifierE.go ends with All tests passed can you fix the verifier? ```go
package main

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

func main() {
	in := bufio.NewReader(os.Stdin)
	out := bufio.NewWriter(os.Stdout)
	defer out.Flush()

	var n, k int
	// Read n and k
	if _, err := fmt.Fscan(in, &n, &k); err != nil {
		return
	}
	var s string
	// Read the sequence string
	fmt.Fscan(in, &s)

	// dp[i][j] stores the move ('W', 'L', 'D') taken to reach the state at step i with balance derived from j.
	// The balance (wins - losses) can range from -k to k.
	// To use array indices, we offset the balance by k.
	// Index j corresponds to balance = j - k.
	// The range of j is 0 to 2*k.
	// Dimensions: (n+1) x (2*k + 1).
	dp := make([][]byte, n+1)
	for i := range dp {
		dp[i] = make([]byte, 2*k+1)
	}

	// Base case: At step 0, balance is 0. 0 maps to index k.
	// We mark dp[0][k] with a non-zero value to indicate it's a reachable state.
	// The value itself doesn't matter for the start state, using 1.
	dp[0][k] = 1

	for i := 0; i < n; i++ {
		for j := 0; j <= 2*k; j++ {
			// If state is not reachable, skip
			if dp[i][j] == 0 {
				continue
			}

			currentBal := j - k
			char := s[i]

			// Try 'W' (Win)
			if char == 'W' || char == '?' {
				nextBal := currentBal + 1
				valid := false
				if i == n-1 {
					// Last game: must result in absolute difference k
					if nextBal == k || nextBal == -k {
						valid = true
					}
				} else {
					// Intermediate game: absolute difference must be strictly less than k
					if nextBal > -k && nextBal < k {
						valid = true
					}
				}

				if valid {
					dp[i+1][nextBal+k] = 'W'
				}
			}

			// Try 'L' (Loss)
			if char == 'L' || char == '?' {
				nextBal := currentBal - 1
				valid := false
				if i == n-1 {
					if nextBal == k || nextBal == -k {
						valid = true
					}
				} else {
					if nextBal > -k && nextBal < k {
						valid = true
					}
				}

				if valid {
					dp[i+1][nextBal+k] = 'L'
				}
			}

			// Try 'D' (Draw)
			if char == 'D' || char == '?' {
				nextBal := currentBal
				valid := false
				if i == n-1 {
					// Cannot end on 'D' because |currentBal| < k, so |nextBal| < k.
					// Unless k=0, but constraint says k >= 1.
				} else {
					if nextBal > -k && nextBal < k {
						valid = true
					}
				}

				if valid {
					dp[i+1][nextBal+k] = 'D'
				}
			}
		}
	}

	// Determine if any valid end state was reached
	endIndex := -1
	if dp[n][0] != 0 { // Balance -k
		endIndex = 0
	} else if dp[n][2*k] != 0 { // Balance k
		endIndex = 2 * k
	}

	if endIndex == -1 {
		fmt.Fprintln(out, "NO")
	} else {
		// Reconstruct the sequence by backtracking
		res := make([]byte, n)
		currJ := endIndex
		for i := n; i > 0; i-- {
			move := dp[i][currJ]
			res[i-1] = move
			if move == 'W' {
				currJ -= 1 // Previous balance was current - 1
			} else if move == 'L' {
				currJ += 1 // Previous balance was current + 1
			}
			// If 'D', previous balance was same as current
		}
		fmt.Fprintln(out, string(res))
	}
}
```