func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, m;   bool a[1001][1001];   bool used[1001][1001];   struct T {     int i, j, d;     T(int i, int j, int d) : i(i), j(j), d(d) {}   };   int main() {     cin >> n >> m;     for (int i = 1; i <= n; i++)       for (int j = 1; j <= m; j++) {         char ch;         cin >> ch;         if (ch ==  # ) a[i][j] = true;       }     queue<T> q;     q.push(T(n, 0, 0));     used[n][0] = true;     while (!q.empty()) {       int i = q.front().i, j = q.front().j, d = q.front().d;       q.pop();       if (i == 1) {         cout << d;         return 0;       }       if (i != 0)         for (int k = 1; k <= m; k++)           if (a[i][k] && !used[0][k]) {             q.push(T(0, k, d + 1));             used[0][k] = true;           }       if (j != 0)         for (int k = 1; k <= n; k++)           if (a[k][j] && !used[k][0]) {             q.push(T(k, 0, d + 1));             used[k][0] = true;           }     }     cout << -1;     return 0;   }   