func_code_string: #include <bits/stdc++.h>   using namespace std;   int n;   int m;   vector<vector<int>> row;   vector<vector<int>> col;   vector<string> g;   vector<vector<bool>> vis;   struct node {     int d;     int i;     int j;   };   struct NODE {     vector<int> e;     bool vis = false;   };   vector<NODE> G;   bool operator<(const node a, const node b) { return a.d > b.d; }   int dijk() {     priority_queue<pair<int, int>> q;     q.push({-1, n - 1});     pair<int, int> cur;     while (!q.empty()) {       cur = q.top();       q.pop();       if (!G[cur.second].vis) {         G[cur.second].vis = true;         if (cur.second == 0) {           return -cur.first - 1;         }         for (int i = 0; i < G[cur.second].e.size(); ++i) {           int nex = G[cur.second].e[i];           q.push({cur.first - 1, nex});         }       }     }     return -1;   }   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     cin >> n >> m;     g.resize(n);     row.resize(n);     col.resize(m);     string T1(n,  . );     string T2(m,  # );     vis.resize(n, (vector<bool>(m, false)));     G.resize(n + m);     for (int i = 0; i < n; ++i) {       cin >> g[i];     }     for (int i = 0; i < n; ++i) {       for (int j = 0; j < m; ++j) {         if (g[i][j] ==  # ) {           G[i].e.push_back(n + j);           G[n + j].e.push_back(i);         }       }     }     cout << dijk() <<   n ;   }   