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.io.*;
import java.util.*;

public class Div2_293_E{
	static final int MIN = -2000000010;
	static final int MAX = 2000000010;
	public static void main(String[] args) throws IOException{
		BufferedInputStream bis = new BufferedInputStream(System.in);
		BufferedReader br = new BufferedReader(new InputStreamReader(bis));
		PrintWriter prnt = new PrintWriter(System.out);
		StringTokenizer tok = new StringTokenizer(br.readLine());
		int n = Integer.parseInt(tok.nextToken());
		int k = Integer.parseInt(tok.nextToken());
		ArrayList <Integer> [] chains = new ArrayList [k];
		tok = new StringTokenizer(br.readLine());
		for(int i = 0;i < n;i++) {
			String curr = tok.nextToken();
			if(chains[i%k] == null) {
				chains[i%k] = new ArrayList<Integer>();
				chains[i%k].add(MIN);
			}
			if(curr.charAt(0)!='?') {
				chains[i%k].add(Integer.parseInt(curr));
			} else
				chains[i%k].add(Integer.MAX_VALUE); 
		}
		
		ArrayList<Integer> chain;
		for(int i = 0;i < k;i++) {
			chains[i].add(MAX);
			ArrayList<Integer> res = new ArrayList<Integer>();
			int from = 0, to = from;
			chain = chains[i];
			while(from < chain.size()-1) {
				for(to = from+1;to < chain.size() && chain.get(to) == Integer.MAX_VALUE;to ++);
				int len = (to-from)-1;
				int maxVal = chain.get(to), minVal = chain.get(from);
				res.add(minVal);
				if(maxVal <= minVal+len) {
					System.out.println("Incorrect sequence");
					return;
				}
				if(minVal >= 0 && maxVal >= 0) {
					for(int j = 1;j <= len;j++) {
						res.add(minVal+j);
					}
				}else if(maxVal <= 0 && minVal <= 0) {
					for(int j = 0;j < len;j++)
						res.add(maxVal-len+j);
				}else if(len != 0){
					ArrayList<Integer> temp = new ArrayList<Integer>();	
					if(minVal < 0 && maxVal > 0) {
						temp.add(0);
						len--;
					}
					for(int cnt = 1;len > 0;cnt++) {
						if(minVal < cnt && maxVal > cnt && len > 0) {
							temp.add(cnt);
							len--;
						}
						if(minVal < -cnt && maxVal > -cnt && len > 0) {
							temp.add(-cnt);
							len--;
						}
					}
					Collections.sort(temp);
					res.addAll(temp);
				}
				from = to;
			}
			res.remove(0);
			for(int j = 0;j < res.size()-1;j++) {
				if(res.get(j) >= res.get(j+1)) {
					prnt.println("Incorrect sequence");
					return;
				}
			}
			chains[i] = res;
		}
		prnt.print(chains[0].get(0));
		for(int i = 1;i < n;i++)
			prnt.print(" "+chains[i%k].get(i/k));
		prnt.println();
		prnt.close();
	}
}
