Compilare: user.cpp:13:18: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] vector <int> V[(1<<20+5)],Sol; ^ user.cpp: In function ‘void buildG()’: user.cpp:41:44: warning: variable ‘initial’ set but not used [-Wunused-but-set-variable] int val=(Attack[j].second | i),initial; ^ user.cpp: In function ‘void Dijkstra()’: user.cpp:122:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[pozition].size();i++) ^