func_code_string: #include <bits/stdc++.h>   const int N = 5e5, mo = 1e6 + 3;   int n, m, i, j, ans;   bool h[N][2], l[N][2];   char s[N];   int main() {     scanf( %d%d , &n, &m);     ans = 1;     for (i = 0; i < n; i++)       for (scanf( %s , s), j = 0; j < m; j++)         if (s[j] !=  . ) {           int x = s[j] - 48;           h[i][(x <= 2) ^ (j & 1)] = 1;           l[j][(x == 1 || x == 4) ^ (i & 1)] = 1;         }     for (i = 0; i < n; i++) ans = ans * (2 - h[i][0] - h[i][1]) % mo;     for (j = 0; j < m; j++) ans = ans * (2 - l[j][0] - l[j][1]) % mo;     printf( %d , ans);   }   