Compilare: main.cpp: In function 'void DFS(int)': main.cpp:17:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<A[u].size();i++){ ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:50:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=0;k<A[i].size();k++){ ~^~~~~~~~~~~~ main.cpp:60:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<CTC.size();i++){ ~^~~~~~~~~~~ main.cpp:59:6: warning: 'inc' may be used uninitialized in this function [-Wmaybe-uninitialized] int inc; ^~~