Compilare: user.cpp: In function ‘void precalcD()’: user.cpp:103:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[Min].size(); i++) ^ user.cpp: In function ‘void Unite(int, int)’: user.cpp:124:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < V[y].size(); i++) ^ user.cpp: In function ‘void Solve()’: user.cpp:142:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp: In function ‘bool check(int, int)’: user.cpp:157:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < F[node].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:196:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("termite.out", "w", stdout); ^ user.cpp: In function ‘void Query(int, int, int)’: user.cpp:164:72: warning: ‘sol2’ may be used uninitialized in this function [-Wmaybe-uninitialized] int left = 0, right = F[B].size() - 1, mid, sol = F[B].size() - 1, sol2; ^