Compilare: user.cpp: In function ‘void solve()’: user.cpp:43:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(vecini1[i].size()==n-1) ^ user.cpp:51:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<vecini1[coada[st]].size();++i) ^ user.cpp:65:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<vecini1[i].size();++j) ^ user.cpp:48:18: warning: ‘start’ may be used uninitialized in this function [-Wmaybe-uninitialized] dist[start]=0; ^