Compilare: main.cpp: In function 'void DFS0(int)': main.cpp:15:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'void DFS1(int)': main.cpp:27:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:65:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] {for(int k=0;k<v[a[i-1][j]].size();k++) ~^~~~~~~~~~~~~~~~~~~~