func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, m;   char s[1008][1008], last[1008][1008];   int a[58][58];   int flag[58], x[58], y[58];   int ans, tot;   bool in[8][8];   struct Tprogram {     void open() {       freopen( 1.in ,  r , stdin);       freopen( 1.out ,  w , stdout);     }     void close() {}     void init() {       scanf( %d%d , &n, &m);       for (int i = 1; i <= n; i++) scanf( %s , &s[i][1]);       for (int i = 1; i <= n; i++)         for (int j = 1; j <= m; j++) {           if (s[i][j] !=  .  && !a[i][j])             a[i][j] = a[i + 1][j] = a[i][j + 1] = a[i + 1][j + 1] = ++tot;           if (s[i][j] !=  . ) {             int t = s[i][j];             t = t <=  B  ? t - 64 : t - 94;             if (!x[t])               x[t] = a[i][j];             else               y[t] = a[i][j];           }         }     }     void dfs(int c, int d) {       if (d > 14) {         memset(in, 0, sizeof(in));         for (int i = 1; i <= 28; i++)           if (!in[flag[x[i]]][flag[y[i]]])             in[flag[x[i]]][flag[y[i]]] = in[flag[y[i]]][flag[x[i]]] = 1;           else             return;         ++ans;         if (ans == 1) {           for (int i = 1; i <= n; i++)             for (int j = 1; j <= m; j++) {               if (a[i][j])                 last[i][j] = flag[a[i][j]] - 1 +  0 ;               else                 last[i][j] =  . ;             }         }         return;       }       if (flag[d])         dfs(c, d + 1);       else {         flag[d] = c;         for (int i = d + 1; i <= 14; i++)           if (!flag[i]) {             flag[i] = c;             dfs(c + 1, d + 1);             flag[i] = 0;           }         flag[d] = 0;       }     }     void work() {       dfs(1, 1);       printf( %d n , ans * 5040);       for (int i = 1; i <= n; i++) {         for (int j = 1; j <= m; j++) printf( %c , last[i][j]);         printf(  n );       }     }   } Program;   int main() {     Program.init();     Program.work();     return 0;   }   