#include <bits/stdc++.h>
using namespace std;
const long long MOD = 998244353;
int main(){
  int H, W;
  cin >> H >> W;
  vector<vector<int>> A(H, vector<int>(W));
  for (int i = 0; i < H; i++){
    for (int j = 0; j < W; j++){
      if (i == 0 || i == H - 1 || j == 0 || j == W - 1){
        cin >> A[i][j];
      }
    }
  }
  bool ok = true;
  for (int i = 0; i < H - 1; i++){
    if (abs(A[i][0] - A[i + 1][0]) > 1){
      ok = false;
    }
    if (abs(A[i][W - 1] - A[i + 1][W - 1]) > 1){
      ok = false;
    }
  }
  for (int i = 0; i < W - 1; i++){
    if (abs(A[0][i] - A[0][i + 1]) > 1){
      ok = false;
    }
    if (abs(A[H - 1][i] - A[H - 1][i + 1]) > 1){
      ok = false;
    }
  }
  if (!ok){
    cout << -1 << endl;
  } else {
    vector<int> row_ng, col_ng;
    vector<bool> row_a, col_a;
    for (int i = 1; i < H - 1; i++){
      if (abs(A[i][0] - A[i][W - 1]) > W - 1){
        row_ng.push_back(i);
        row_a.push_back(abs(A[i][0] - A[i][W - 1]) > W + 1);
      }
    }
    for (int i = 1; i < W - 1; i++){
      if (abs(A[0][i] - A[H - 1][i]) > H - 1){
        col_ng.push_back(i);
        col_a.push_back(abs(A[0][i] - A[H - 1][i]) > H + 1);
      }
    }
    if (row_ng.empty() && col_ng.empty()){
      cout << 1 << endl;
    } else {
      assert(row_ng.empty() || col_ng.empty());
      if (!col_ng.empty()){
        swap(row_ng, col_ng);
        swap(row_a, col_a);
        swap(H, W);
      }
      int cnt = row_ng.size();
      vector<bool> adj(cnt - 1, false);
      for (int i = 1; i < cnt - 1; i++){
        if (row_a[i]){
          adj[i - 1] = true;
          adj[i] = true;
        }
      }
      vector<vector<long long>> dp(cnt, vector<long long>(W - 2, 0));
      for (int i = 0; i < W - 2; i++){
        dp[0][i] = 1;
      }
      for (int i = 0; i < cnt - 1; i++){
        if (!adj[i]){
          long long sum = 0;
          for (int j = 0; j < W - 2; j++){
            sum += dp[i][j];
          }
          sum %= MOD;
          for (int j = 0; j < W - 2; j++){
            dp[i + 1][j] = sum;
          }
        } else {
          for (int j = 0; j < W - 2; j++){
            for (int k = max(j - 1, 0); k <= min(j + 1, W - 3); k++){
              dp[i + 1][k] += dp[i][j];
              dp[i + 1][k] %= MOD;
            }
          }
        }
      }
      long long ans = 0;
      for (int i = 0; i < W - 2; i++){
        ans += dp[cnt - 1][i];
      }
      ans %= MOD;
      cout << ans << endl;
    }
  }
}