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;
string c[1000005];
int c1[100005];
vector<int> v;
int main() {
  std::ios::sync_with_stdio(false);
  int n, i, j, l, r, c2 = 0, val, val1, l1, r1, mid, k;
  cin >> n >> k;
  for (i = 0; i < n; i++) {
    cin >> c[i];
    if (c[i] != "?") {
      if (c[i][0] != '-') {
        for (j = 0; j < c[i].length(); j++) {
          c1[i] += (c[i][j] - '0') * round(pow(10, c[i].length() - j - 1));
        }
      } else {
        for (j = 1; j < c[i].length(); j++) {
          c1[i] += (c[i][j] - '0') * round(pow(10, c[i].length() - j - 1));
        }
        c1[i] *= -1;
      }
    }
  }
  for (i = 0; i < k; i++) {
    j = i;
    c2 = 0;
    v.clear();
    while (j < n) {
      if (c[j] != "?") {
        if (j - k >= 0 && c[j - k] == "?") {
          v.push_back(j - k);
        }
        c2 = 0;
      }
      if (c[j] == "?") {
        if (c2 == 0) {
          v.push_back(j);
        }
        c2++;
      }
      j += k;
    }
    j -= k;
    if (c2 == 0 && c[j] == "?") {
      v.push_back(j);
      v.push_back(j);
    } else {
      if (c[j] == "?") {
        v.push_back(j);
      }
    }
    for (j = 0; j < v.size(); j++) {
      if (v[j] - k < 0) {
        l = -1 * (1000 * 1000 * 1000 + 5);
      } else {
        l = c1[v[j] - k];
      }
      if (v[j + 1] + k > n - 1) {
        r = (1000 * 1000 * 1000 + 5);
      } else {
        r = c1[v[j + 1] + k];
      }
      if (r - l - 1 < (v[j + 1] - v[j]) / k + 1) {
        cout << "Incorrect sequence" << endl;
        return 0;
      } else {
        val = v[j + 1] - v[j];
        val /= k;
        val++;
        val1 = val + 1;
        val1 /= 2;
        l1 = l + val1;
        val -= val1 - 1;
        r1 = r - val;
        if (l1 <= 0 && r1 >= 0) {
          mid = 0;
        } else if (l1 > 0) {
          mid = l1;
        } else {
          mid = r1;
        }
        l1 = v[j];
        mid -= val1 - 1;
        while (l1 <= v[j + 1]) {
          c1[l1] = mid;
          mid++;
          l1 += k;
        }
      }
      j++;
    }
  }
  for (i = 0; i < k; i++) {
    j = i;
    while (j < n - k) {
      if (c1[j] >= c1[j + k]) {
        cout << "Incorrect sequence" << endl;
        return 0;
      }
      j += k;
    }
  }
  for (i = 0; i < n; i++) {
    cout << c1[i] << " ";
  }
}
