7 2
-10 0 ? 1 ? 2 10
 1 1
0
 5 1
-3 -2 -1 0 1
 7 1
-4 ? ? ? ? ? 2
 17 1
? -13 ? ? ? -3 ? ? ? ? ? 10 ? ? ? ? 100
 3 1
-5 ? 0
 7 2
-10 0 ? 1 6 2 ?
 3 1
-3 ? -2
 6 1
-1 ? 1 2 3 4
 1 1
?
 9 2
-10 0 ? 1 ? 2 ? 3 ?
 10 2
3 ? 5 ? 7 ? 9 ? 11 ?
 9 2
? ? -10 ? ? ? 10 ? ?
 9 3
? ? ? ? ? ? ? ? ?
 7 2
? ? 10 ? ? ? ?
 5 1
1000000000 ? ? ? ?
 7 3
1 ? -1000000000 ? 100 ? 2
 7 2
? ? -10 ? ? ? ?
 39 3
-5 1 -13 ? 2 -12 ? 3 -11 -2 4 -10 ? 5 -9 0 6 -8 ? 7 -7 ? 8 -6 5 9 -5 ? 10 -4 ? 11 -3 ? 12 -2 10 13 -1
 7 2
? ? 10 ? -10 ? ?
 7 1
-2 ? ? ? ? ? 4
 7 2
-10 0 0 1 ? 2 ?
 9 2
-10 0 ? 1 -6 2 ? 3 ?
 7 3
1 ? -1000000000 ? 100 ? 3
 9 2
-10 0 ? 1 ? 2 ? 3 0
 9 2
10 0 ? 1 ? 2 ? 3 ?
 3 1
-1 ? 1
 10 1
-2 ? ? ? ? ? ? 5 ? 10
 5 2
? ? -1000000000 ? ?
 2 1
-1000000000 1000000000
 7 2
-10 0 ? 1 -6 2 ?
 5 4
-1 ? ? ? 2
 7 2
10 0 ? 1 ? 2 ?
 7 2
-10 0 ? 1 ? 2 0
 7 2
-10 0 ? 1 ? 2 ?
 7 2
? ? -10 ? 10 ? ?
 6 1
-3 ? ? ? ? 3
 9 2
-10 0 ? 1 ? 2 ? 3 10
 3 1
4 ? 5
 9 3
-5 0 -1 ? ? ? 0 5 1
 7 1
-3 ? ? ? ? ? 3

-10 0 -1 1 0 2 10
 0
 -3 -2 -1 0 1
 -4 -3 -2 -1 0 1 2
 -14 -13 -6 -5 -4 -3 -2 -1 0 1 2 10 11 12 13 14 100
 -5 -1 0
 -10 0 0 1 6 2 7
 Incorrect sequence
 -1 0 1 2 3 4
 0
 -10 0 -2 1 -1 2 0 3 1
 3 -2 5 -1 7 0 9 1 11 2
 -11 -2 -10 -1 0 0 10 1 11
 -1 -1 -1 0 0 0 1 1 1
 0 -1 10 0 11 1 12
 1000000000 1000000001 1000000002 1000000003 1000000004
 Incorrect sequence
 -11 -1 -10 0 -1 1 0
 -5 1 -13 -4 2 -12 -3 3 -11 -2 4 -10 -1 5 -9 0 6 -8 1 7 -7 2 8 -6 5 9 -5 6 10 -4 7 11 -3 8 12 -2 10 13 -1
 Incorrect sequence
 -2 -1 0 1 2 3 4
 -10 0 0 1 1 2 2
 -10 0 -7 1 -6 2 -1 3 0
 1 0 -1000000000 2 100 0 3
 -10 0 -3 1 -2 2 -1 3 0
 10 0 11 1 12 2 13 3 14
 -1 0 1
 -2 -1 0 1 2 3 4 5 6 10
 -1000000001 -1 -1000000000 0 0
 -1000000000 1000000000
 -10 0 -7 1 -6 2 0
 -1 0 0 0 2
 10 0 11 1 12 2 13
 -10 0 -2 1 -1 2 0
 -10 0 -1 1 0 2 1
 -11 -1 -10 0 10 1 11
 -3 -2 -1 0 1 3
 -10 0 -1 1 0 2 1 3 10
 Incorrect sequence
 -5 0 -1 -1 1 0 0 5 1
 -3 -2 -1 0 1 2 3 

import java.util.Arrays;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.IOException;
import java.util.StringTokenizer;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main {
	public static void main(String[] args) {
		InputStream inputStream = System.in;
		OutputStream outputStream = System.out;
		InputReader in = new InputReader(inputStream);
		PrintWriter out = new PrintWriter(outputStream);
		TaskE solver = new TaskE();
		solver.solve(1, in, out);
		out.close();
	}
}

class TaskE {
    public void solve(int testNumber, InputReader in, PrintWriter out) {
        int n = in.nextInt();
        int k = in.nextInt();

        int[] a = new int[n];
        Arrays.fill(a, Integer.MIN_VALUE);

        for (int i = 0; i < n; i++) {
            String s = in.next();

            if (!s.equals("?")) {
                a[i] = Integer.valueOf(s);
            }
        }

        int[] b = new int[n/k+1];

        for (int i = 0; i < k; i++) {
            int size = 0;
            for (int j=0; i+j*k <n; j++, size++){
                b[size] = a[i+j*k];
            }

            int prev = Integer.MIN_VALUE;
            int firstIndex = 0;

            for (int j=0; j<size; j++){
                if (b[j] != Integer.MIN_VALUE){
                    if (firstIndex < j){
                        fill(b, firstIndex, j - firstIndex, prev, b[j]);
                    }

                    firstIndex = j+1;
                    prev = b[j];
                }
            }

            if (firstIndex <size){
                fill(b, firstIndex, size-firstIndex, prev, Integer.MAX_VALUE);
            }

            for (int j=0; j<size; j++){
                a[i+j*k] = b[j];
            }
        }

        long sum = 0;
        for (int i=0; i<k; i++){
            sum+= a[i];
        }

        long prevSum = sum;

        for (int i=0; i+k<n; i++){
            sum -= a[i];
            sum += a[i+k];

            if (prevSum >= sum){

                if (n == 99941 && k == 52){
                    out.println(prevSum + " " + sum);
                    out.println(i);

                }

                out.println("Incorrect sequence");
                return;
            }

            prevSum = sum;
        }

        for (int i=0; i<n; i++){
            out.print(a[i] + " ");
        }
    }

    private void fill(int[] b, int firstIndex, int size, int prev, int next) {
        if (prev >= 0){
            for (int i=0; i<size; i++){
                b[firstIndex+i] = prev+i+1;
            }
        } else if (next <=0){
            for (int i=0; i<size; i++){
                b[firstIndex+size-1-i] = next-i-1;
            }
        } else {
            int sideLen = (size-1) / 2;
            int left = Math.max(-sideLen, prev+1);
            int right = Math.min(sideLen, next-1);

            if (Math.abs(left) < Math.abs(right)){
                for (int i=0; i<size; i++){
                    b[firstIndex+i] = left+i;
                }
            } else {
                for (int i=0; i<size; i++){
                    b[firstIndex+size-1 - i] = right-i;
                }
            }
        }

    }
}

class InputReader {
    public BufferedReader reader;
    public StringTokenizer tokenizer;


    public InputReader(InputStream stream){
        reader = new BufferedReader(new InputStreamReader(stream));
    }

    public String next(){
        while (tokenizer == null || !tokenizer.hasMoreTokens()){
            try {
                tokenizer = new StringTokenizer(reader.readLine());
            } catch (IOException e) {
                throw new RuntimeException("FATAL ERROR", e);
            }
        }

        return tokenizer.nextToken();
    }

    public int nextInt(){
        return Integer.valueOf(next());
    }

}

