Compilare: user.cpp: In function ‘int Search(int)’: user.cpp:17:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < H[line].size(); ++ i) ^ user.cpp:18:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (H[line][i] == value) ^ user.cpp: In function ‘int main()’: user.cpp:46:22: warning: ‘N’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (int i = 1 + N ; i <= M; ++ i) ^