Compilare: user.cpp: In function ‘void backtrUpperLevel(int, int)’: user.cpp:57:34: warning: suggest parentheses around assignment used as truth value [-Wparentheses] mat[1][i][j] = comp[1][i][j] = szs[1][i][j] = 0; ^ user.cpp: In function ‘int main()’: user.cpp:172:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int st = 1; st <= Map.size(); ++ st) ^ user.cpp:154:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cuburi.in", "r", stdin); ^ user.cpp:155:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cuburi.out", "w", stdout); ^