Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:18:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<v[k].size(); ++i) ^ user.cpp: In function ‘void DFSt(int)’: user.cpp:25:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<vt[k].size(); ++i) ^ user.cpp: In function ‘void DFSsearch(int)’: user.cpp:30:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<tareT[k].size() && ok; ++i) ^ user.cpp: In function ‘void desc()’: user.cpp:38:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^ user.cpp: In function ‘void drumuri()’: user.cpp:61:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<v[i].size(); ++j) ^