Koa the Koala has a matrix $A$ of $n$ rows and $m$ columns. Elements of this matrix are distinct integers from $1$ to $n \cdot m$ (each number from $1$ to $n \cdot m$ 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 $R_i(M) = [ M_{i1}, M_{i2}, \ldots, M_{im} ]$ for all $i$ ($1 \le i \le n$).
• The $j$-th column of $M$ is defined as $C_j(M) = [ M_{1j}, M_{2j}, \ldots, M_{nj} ]$ for all $j$ ($1 \le j \le m$).

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:

• $X = \{ \max(R_1(A)), \max(R_2(A)), \ldots, \max(R_n(A)) \}$
• $Y = \{ \max(C_1(A)), \max(C_2(A)), \ldots, \max(C_m(A)) \}$

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

• $S(A') = S(A)$
• $R_i(A')$ is bitonic for all $i$ ($1 \le i \le n$)
• $C_j(A')$ is bitonic for all $j$ ($1 \le j \le m$)

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

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

The first line of the input contains two integers $n$ and $m$ ($1 \le n, m \le 250$)  — 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 $A_{ij}$ ($1 \le A_{ij} \le n \cdot m$) of matrix $A$. It is guaranteed that every number from $1$ to $n \cdot m$ appears exactly once among elements of the matrix.

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 $n \cdot m$ 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.