Compilare: main.cpp: In function 'void bfs(int)': main.cpp:25:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[nod].size();i++){ ~^~~~~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:64:17: warning: 'mj' may be used uninitialized in this function [-Wmaybe-uninitialized] extra[mj]++; ~~~~~~~~^ main.cpp:63:20: warning: 'mi' may be used uninitialized in this function [-Wmaybe-uninitialized] extra[mi]++; ^ main.cpp:55:58: warning: 'cntu' may be used uninitialized in this function [-Wmaybe-uninitialized] }else if(max(extra[i],extra[j])==newm&&cntu<cnt[p1]+cnt[p2]){ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~