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.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;


public class Main {
		
	
	public static List<Integer> solve(List<Integer> list) {
		List<Integer> result = new ArrayList<Integer>();

		list.add(0, (int)-2e9);
		list.add((int)2e9);
		
		for (int i=0;i<list.size()-1;) {
			int j = i+1;
			while (j<list.size() && list.get(j)==Integer.MAX_VALUE) j++;

			int cnt = j-i-1;
			if (list.get(i)+cnt >= list.get(j)) return null;
			
			int from = list.get(i), to = list.get(j);
			result.add(from);
			if (from>=0 && to >=0) {
				for (int x=0;x<cnt;x++) {
					result.add(from+x+1);
				}
			} else if (from<0 && to<0) {
				for (int x=0;x<cnt;x++) {
					result.add(to-cnt+x);
				}
			} else {
				List<Integer> l = new ArrayList<Integer>();
				
				for (int x=0; cnt>0; x++) {
					if (cnt>0 && x<to && x>from) {
						l.add(x);
						cnt--;
					}
					if (x==0) continue;
					if (cnt>0 && -x>from && -x<to) {
						l.add(-x);
						cnt--;
					}
				}
				Collections.sort(l);
				result.addAll(l);
			}
			i = j;

		}
		
		result.remove(0);
		for (int i=0;i<result.size()-1;i++) {
			if (result.get(i)>= result.get(i+1)) return null;
		}
		
		return result;		
	}
	
	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		PrintWriter out = new PrintWriter(System.out);

		String[] tok = in.readLine().split(" ");
		int N = Integer.parseInt(tok[0]);
		int K = Integer.parseInt(tok[1]);

		List<Integer>[] lists = new List[K];
		tok = in.readLine().split(" ");
		for (int i=0;i<N;i++) {
			if (lists[i%K] == null) {
				lists[i%K] = new ArrayList<Integer>();
			}
			
			if ("?".equals(tok[i])) {
				lists[i%K].add(Integer.MAX_VALUE);
			} else {
				lists[i%K].add(Integer.parseInt(tok[i]));
			}
			
		}

		boolean poss = true;
		for (int i=0;i<K;i++) {
			lists[i] = solve(lists[i]);
			if (lists[i] == null) {
				poss = false;
				break;
			}
		}
		
		if (!poss) out.print("Incorrect sequence");
		else {
			for (int i=0;i<N;i++) {
				out.print(lists[i%K].get(i/K) + " ");
			}
		}
		
		in.close();
		out.close();
	}
}
