Problem: Koa the Koala has a matrix A of n rows and m columns. Elements of this matrix are distinct integers from 1 to n ⋅ m (each number from 1 to n ⋅ m appears exactly once in the matrix).

For any matrix M of n rows and m columns let's define the following:

  * The i-th row of M is defined as R_i(M) = [ M_{i1}, M_{i2}, …, M_{im} ] for all i (1 ≤ i ≤ n). 
  * The j-th column of M is defined as C_j(M) = [ M_{1j}, M_{2j}, …, M_{nj} ] for all j (1 ≤ j ≤ m). 



Koa defines S(A) = (X, Y) as the spectrum of A, where X is the set of the maximum values in rows of A and Y is the set of the maximum values in columns of A.

More formally:

  * X = \{ max(R_1(A)), max(R_2(A)), …, max(R_n(A)) \} 
  * Y = \{ max(C_1(A)), max(C_2(A)), …, max(C_m(A)) \}



Koa asks you to find some matrix A' of n rows and m columns, such that each number from 1 to n ⋅ m appears exactly once in the matrix, and the following conditions hold:

  * S(A') = S(A) 
  * R_i(A') is bitonic for all i (1 ≤ i ≤ n) 
  * C_j(A') is bitonic for all j (1 ≤ j ≤ m) 

An array t (t_1, t_2, …, t_k) is called bitonic if it first increases and then decreases.

More formally: t is bitonic if there exists some position p (1 ≤ p ≤ k) such that: t_1 < t_2 < … < t_p > t_{p+1} > … > t_k.

Help Koa to find such matrix or to determine that it doesn't exist.

Input

The first line of the input contains two integers n and m (1 ≤ n, m ≤ 250) — the number of rows and columns of A.

Each of the ollowing n lines contains m integers. The j-th integer in the i-th line denotes element A_{ij} (1 ≤ A_{ij} ≤ n ⋅ m) of matrix A. It is guaranteed that every number from 1 to n ⋅ m appears exactly once among elements of the matrix.

Output

If such matrix doesn't exist, print -1 on a single line.

Otherwise, the output must consist of n lines, each one consisting of m space separated integers — a description of A'.

The j-th number in the i-th line represents the element A'_{ij}.

Every integer from 1 to n ⋅ m should appear exactly once in A', every row and column in A' must be bitonic and S(A) = S(A') must hold.

If there are many answers print any.

Examples

Input


3 3
3 5 6
1 7 9
4 8 2


Output


9 5 1
7 8 2
3 6 4


Input


2 2
4 1
3 2


Output


4 1
3 2


Input


3 4
12 10 8 6
3 4 5 7
2 11 9 1


Output


12 8 6 1
10 11 9 2
3 4 5 7

Note

Let's analyze the first sample:

For matrix A we have:

    * Rows: 
      * R_1(A) = [3, 5, 6]; max(R_1(A)) = 6 
      * R_2(A) = [1, 7, 9]; max(R_2(A)) = 9 
      * R_3(A) = [4, 8, 2]; max(R_3(A)) = 8 

    * Columns: 
      * C_1(A) = [3, 1, 4]; max(C_1(A)) = 4 
      * C_2(A) = [5, 7, 8]; max(C_2(A)) = 8 
      * C_3(A) = [6, 9, 2]; max(C_3(A)) = 9 

  * X = \{ max(R_1(A)), max(R_2(A)), max(R_3(A)) \} = \{ 6, 9, 8 \} 
  * Y = \{ max(C_1(A)), max(C_2(A)), max(C_3(A)) \} = \{ 4, 8, 9 \} 
  * So S(A) = (X, Y) = (\{ 6, 9, 8 \}, \{ 4, 8, 9 \}) 



For matrix A' we have:

    * Rows: 
      * R_1(A') = [9, 5, 1]; max(R_1(A')) = 9 
      * R_2(A') = [7, 8, 2]; max(R_2(A')) = 8 
      * R_3(A') = [3, 6, 4]; max(R_3(A')) = 6 

    * Columns: 
      * C_1(A') = [9, 7, 3]; max(C_1(A')) = 9 
      * C_2(A') = [5, 8, 6]; max(C_2(A')) = 8 
      * C_3(A') = [1, 2, 4]; max(C_3(A')) = 4 

  * Note that each of this arrays are bitonic. 
  * X = \{ max(R_1(A')), max(R_2(A')), max(R_3(A')) \} = \{ 9, 8, 6 \} 
  * Y = \{ max(C_1(A')), max(C_2(A')), max(C_3(A')) \} = \{ 9, 8, 4 \} 
  * So S(A') = (X, Y) = (\{ 9, 8, 6 \}, \{ 9, 8, 4 \}) 

Solution (in CPP):

Solution:
#include <bits/stdc++.h>
using std::cin;
using std::cout;
const int N = 254, N2 = N * N;
int n, R, C;
int a[N][N], b[N][N];
int rm[N], cm[N], rmi[N], cmi[N];
bool isrm[N2], iscm[N2];
int num[N2];
std::pair<int, int> pos[N2];
int seq[N];
inline void up(int &x, const int y) { x < y ? x = y : 0; }
int main() {
  int i, j, k = 0, r = 0, c = 0, z = 0, n_num = 0, n_pos = 0;
  std::ios::sync_with_stdio(false), cin.tie(NULL);
  cin >> R >> C, n = R * C;
  memset(rm, 0, sizeof rm), memset(cm, 0, sizeof cm);
  for (i = 1; i <= R; ++i)
    for (j = 1; j <= C; ++j)
      cin >> a[i][j], up(rm[i], a[i][j]), up(cm[j], a[i][j]);
  for (i = 1; i <= R; ++i) isrm[rm[i]] = true;
  for (j = 1; j <= C; ++j) iscm[cm[j]] = true;
  for (i = n; i; --i) {
    if (isrm[i] && iscm[i])
      b[++r][++c] = i;
    else if (isrm[i])
      b[++r][c] = i;
    else if (iscm[i])
      b[r][++c] = i;
    else
      num[n_num++] = i;
    if (isrm[i] || iscm[i]) {
      for (j = c; j; --j)
        if (!b[r][j]) b[r][j] = -1, pos[n_pos++] = std::pair<int, int>(r, j);
      for (j = r; j; --j)
        if (!b[j][c]) b[j][c] = -1, pos[n_pos++] = std::pair<int, int>(j, c);
    }
  }
  assert(r == R && c == C && n_num == n_pos);
  for (i = 0; i < n_num; ++i) b[pos[i].first][pos[i].second] = num[i];
  memset(rmi, 0, sizeof rmi), memset(cmi, 0, sizeof cmi);
  for (i = 1; i <= R; ++i)
    for (j = 1; j <= C; ++j) up(rmi[i], b[i][j]), up(cmi[j], b[i][j]);
  std::sort(rm + 1, rm + R + 1), std::sort(rmi + 1, rmi + R + 1);
  bool flag = true;
  for (i = 1; i <= R; ++i) flag = flag && rm[i] == rmi[i];
  std::sort(cm + 1, cm + C + 1), std::sort(cmi + 1, cmi + C + 1);
  for (j = 1; j <= C; ++j) flag = flag && cm[j] == cmi[j];
  if (!flag) return cout << "-1\n", 0;
  for (i = 1; i <= R; ++i)
    for (j = 1; j <= C; ++j) cout << b[i][j] << (j == C ? '\n' : ' ');
  return 0;
}