Gold

input/code.cpp: In function 'int main()':
input/code.cpp:38:19: warning: 'py' may be used uninitialized in this function [-Wmaybe-uninitialized]
   cout << H(px, py) << endl;
                   ^
input/code.cpp:38:19: warning: 'px' may be used uninitialized in this function [-Wmaybe-uninitialized]

#include <iostream>
#include <set>
using namespace std;
int t[50][50], z[50][50];
// 0 .   1 #   2 T   3 G
int H(int x, int y) {
  if (z[x][y] || t[x][y] == 1) return 0;
  z[x][y] = 1;
  int r = t[x][y] == 3;
  int w = (t[x-1][y] == 2 || t[x+1][y] == 2 || t[x][y-1] == 2 || t[x][y+1] == 2);
  if (!w) {
    r += H(x+1, y);
    r += H(x-1, y);
    r += H(x, y+1);
    r += H(x, y-1);
  }
  return r;
}
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  int w, h;
  cin >> w >> h;
  int px, py;
  for (int i = 0; i < h; ++i) {
    cin >> ws;
    for (int j = 0; j < w; ++j) {
      char c;
      cin >> c;
      if (c == '#') t[i][j] = 1;
      if (c == 'T') t[i][j] = 2;
      if (c == 'G') t[i][j] = 3;
      if (c == 'P') {
        px = i, py = j;
      }
    }
  }
  cout << H(px, py) << endl;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: ACCEPTED

Test 19

Verdict: ACCEPTED

Test 20

Verdict: ACCEPTED

Test 21

Verdict: ACCEPTED

Test 22

Verdict: ACCEPTED

Test 23

Verdict: ACCEPTED

Test 24

Verdict: ACCEPTED