Compilare: user.cpp: In function ‘int main()’: user.cpp:26:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[cul][a][b] = v[cul][a][b] ^ 1; ^ user.cpp:26:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[cul][a][b] = v[cul][a][b] ^ 1; ^ user.cpp:27:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[cul][a][y + 1] = v[cul][a][y + 1] ^ 1; ^ user.cpp:27:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[cul][a][y + 1] = v[cul][a][y + 1] ^ 1; ^ user.cpp:28:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[cul][x + 1][b] = v[cul][x + 1][b] ^ 1; ^ user.cpp:28:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[cul][x + 1][b] = v[cul][x + 1][b] ^ 1; ^ user.cpp:29:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[cul][x + 1][y + 1] = v[cul][x + 1][y + 1] ^ 1; ^ user.cpp:29:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[cul][x + 1][y + 1] = v[cul][x + 1][y + 1] ^ 1; ^ user.cpp:11:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("rox.in", "r", stdin); ^ user.cpp:12:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("rox.out", "w", stdout); ^ user.cpp:15:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d %d", &n, &m, &u); ^ user.cpp:22:55: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d %d %d %c", &a, &b, &x, &y, &cul); ^ user.cpp:38:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &q); ^ user.cpp:43:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d", &a, &b); ^