Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:23:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(vf[i] == v[node].size()) ~~~~~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void Back(int)': main.cpp:50:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0 ; j < poz[i].size() ; j++){ ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:102:26: warning: unused variable 'it' [-Wunused-variable] for(auto it: v[neighbour]) ^~ main.cpp:96:34: warning: 'neighbour' may be used uninitialized in this function [-Wmaybe-uninitialized] unmod[neighbour] = 1; ~~~~~~~~~~~~~~~~~^~~