Eroare de compilare: user.cpp: In function ‘void DFS(int, int)’: user.cpp:30:21: error: could not convert ‘sons’ from ‘std::set<int>’ to ‘bool’ if (sons) ^ user.cpp:31:5: error: expected primary-expression before ‘}’ token } ^ user.cpp:31:5: error: expected ‘;’ before ‘}’ token user.cpp:29:25: warning: unused variable ‘it2’ [-Wunused-variable] for (const int &it2: G[it]) ^ user.cpp:28:13: warning: unused variable ‘found’ [-Wunused-variable] int found = 0; ^ user.cpp: In function ‘int main()’: user.cpp:43:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &N, &M); ^ user.cpp:46:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &x, &y); ^