func_code_string: #include <bits/stdc++.h>   using namespace std;   const long double eps = 1e-7;   const int inf = 1000000010;   const int mod = 1000000007;   const int MAXN = 1010;   int n, m, t, x, y, xx, yy, ans, v, u, q, a, b, c, cnt;   string A[MAXN];   int dist[MAXN][MAXN];   int main() {     ios_base::sync_with_stdio(false);     cin.tie(0);     cout.tie(0);     cin >> n >> m;     for (int i = 1; i <= n; i++) {       cin >> A[i];       A[i] =  .  + A[i];       for (int j = 1; j <= m; j++) {         if (A[i][j] ==  S ) {           xx = i;           yy = j;         }         if (A[i][j] ==  E ) {           x = i;           y = j;         }       }     }     queue<pair<int, int> > q;     q.push({x, y});     memset(dist, 63, sizeof(dist));     dist[x][y] = 0;     while (!q.empty()) {       int x = q.front().first, y = q.front().second;       q.pop();       if (dist[x][y] > dist[xx][yy]) break;       if (x < 1 || y < 1 || x > n || y > m || A[x][y] ==  T ) continue;       if (dist[x][y] + 1 < dist[x + 1][y]) {         dist[x + 1][y] = dist[x][y] + 1;         q.push({x + 1, y});       }       if (dist[x][y] + 1 < dist[x][y + 1]) {         dist[x][y + 1] = dist[x][y] + 1;         q.push({x, y + 1});       }       if (dist[x][y] + 1 < dist[x - 1][y]) {         dist[x - 1][y] = dist[x][y] + 1;         q.push({x - 1, y});       }       if (dist[x][y] + 1 < dist[x][y - 1]) {         dist[x][y - 1] = dist[x][y] + 1;         q.push({x, y - 1});       }     }     for (int i = 1; i <= n; i++) {       for (int j = 1; j <= m; j++) {         if (A[i][j] ==  S  || A[i][j] ==  E  || A[i][j] ==  T ) continue;         if (dist[i][j] <= dist[xx][yy]) ans += A[i][j] -  0 ;       }     }     cout << ans << endl;     return 0;   }   