Compilare: user.cpp: In function ‘void DFS(int, int)’: user.cpp:26:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<v[k].size(); ++i) ^ user.cpp: In function ‘void DFS2(int)’: user.cpp:33:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<v[k].size(); ++i) ^ user.cpp: In function ‘void sortaret()’: user.cpp:48:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<v[k].size(); ++i) ^ user.cpp: In function ‘int main()’: user.cpp:74:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<v[1].size(); ++i)//le iau din 1 ^ user.cpp:80:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<v[1].size(); ++i) ^ user.cpp:91:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<v[i].size(); ++j) ^