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 

#include <bits/stdc++.h>
using namespace std;
int StoI(string s) {
  int ANS = 0;
  int Sign = 0;
  if (s[0] == '-')
    Sign = 1;
  else
    ANS = s[0] - 48;
  for (int i = 1; i < s.length(); ++i) ANS *= 10, ANS += s[i] - 48;
  if (Sign)
    return -ANS;
  else
    return ANS;
}
int a[100007], n, k;
bool mark[100007];
int main(void) {
  while (~scanf("%d%d", &n, &k)) {
    memset(mark, 0, sizeof(mark));
    for (int i = 1; i <= n; ++i) {
      string str;
      cin >> str;
      if (str[0] == '?')
        mark[i] = 1;
      else
        a[i] = StoI(str);
    }
    int ERR = 0;
    for (int start = 1; start <= k; ++start) {
      int t = 1 + (n - start) / k;
      int LowerBound = -1000100000, UpperBound;
      for (int i = start; i <= n; i += k) {
        if (!mark[i]) {
          if (a[i] <= LowerBound) {
            ERR = 1;
            break;
          } else {
            LowerBound = a[i];
            continue;
          }
        }
        int L = i, R = i, cnt = 1;
        while (R + k <= n && mark[R + k]) R += k, ++cnt;
        if (R + k <= n)
          UpperBound = a[R + k];
        else
          UpperBound = 1000100000;
        if (UpperBound - LowerBound <= cnt) {
          ERR = 1;
          break;
        } else {
          if (UpperBound >= cnt / 2 && cnt / 2 - LowerBound >= cnt) {
            for (int num = cnt / 2, j = R; j >= L; j -= k, num--) {
              a[j] = num;
              mark[j] = 0;
            }
          } else if (LowerBound <= -(cnt / 2) && UpperBound + cnt / 2 >= cnt) {
            for (int num = -(cnt / 2), j = L; j <= R; j += k, num++) {
              a[j] = num;
              mark[j] = 0;
            }
          } else if (UpperBound < cnt / 2) {
            for (int num = UpperBound - 1, j = R; j >= L; j -= k, num--) {
              a[j] = num;
              mark[j] = 0;
            }
          } else if (LowerBound > -(cnt / 2)) {
            for (int num = LowerBound + 1, j = L; j <= R; j += k, num++) {
              a[j] = num;
              mark[j] = 0;
            }
          } else {
            ERR = 2;
            break;
          }
        }
      }
      if (ERR) break;
    }
    if (ERR) {
      printf("Incorrect sequence\n");
    } else {
      for (int i = 1; i <= n; ++i) {
        printf("%d", a[i]);
        if (i == n)
          printf("\n");
        else
          printf(" ");
      }
    }
  }
  return 0;
}
