Compilare: user.cpp: In function ‘int getH(std::vector<int>&)’: user.cpp:22:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v.size(); ++i) ^ user.cpp: In function ‘int sear(std::vector<int>&)’: user.cpp:34:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < H[h].size(); ++i) ^ user.cpp:40:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < v.size(); ++j) ^ user.cpp: In function ‘void dfs4(int, int)’: user.cpp:72:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < nT[x].size(); ++i) ^ user.cpp:83:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < nT[x].size(); ++i) ^ user.cpp: In function ‘void dfs3(int, int)’: user.cpp:109:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < nT[x].size(); ++i) ^ user.cpp: In function ‘void dfs2(int, int, int)’: user.cpp:127:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < T[x].size(); ++i) ^ user.cpp: In function ‘int test(int)’: user.cpp:152:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < T[i].size(); ++j) ^ user.cpp: In function ‘void dfs1(int, int)’: user.cpp:199:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < T[x].size(); ++i) ^