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>
int nextInt(void) {
  char ch;
  int sign, x;
  do {
    ch = getchar();
  } while (ch < '-');
  if (ch == '-') {
    sign = -1;
    ch = getchar();
  } else
    sign = 1;
  x = 0;
  while (ch >= '0' && ch <= '9') {
    x = x * 10 + ch - '0';
    ch = getchar();
  }
  return sign * x;
}
void printInt(int x) {
  char ch[10];
  int sign, cnt;
  if (x < 0) {
    putchar('-');
    sign = -1;
  } else
    sign = 1;
  cnt = 0;
  do {
    ch[cnt++] = '0' + x % 10 * sign;
    x /= 10;
  } while (x);
  while (cnt--) putchar(ch[cnt]);
}
int a[100000];
int main(void) {
  int i;
  int n, k;
  scanf("%d %d ", &n, &k);
  for (i = 0; i < n; i++) {
    int ch = getchar();
    if (ch == '?') {
      getchar();
      a[i] = 1010000000;
    } else {
      ungetc(ch, stdin);
      a[i] = nextInt();
    }
  }
  for (i = 0; i < k; i++) {
    int first, last;
    first = i;
    while (first <= n) {
      int numQ, lFig, rFig;
      for (last = first; last < n && a[last] == 1010000000; last += k)
        ;
      numQ = (last - first) / k;
      lFig = first - k >= 0 ? a[first - k] : -1010000000;
      rFig = last < n ? a[last] : 1010000000;
      if (rFig - lFig - 1 < numQ) {
        puts("Incorrect sequence");
        return 0;
      } else {
        int cnt;
        int left = -(numQ / 2), right = left + numQ - 1;
        if (!(lFig < left))
          left = lFig + 1;
        else if (!(right < rFig)) {
          right = rFig - 1;
          left = right - numQ + 1;
        }
        cnt = 0;
        while (first < last) {
          a[first] = left + cnt++;
          first += k;
        }
        first += k;
      }
    }
  }
  for (i = 0; i < n; i++) {
    printInt(a[i]);
    putchar(' ');
  }
  return 0;
}
