Compilare: user.cpp: In function ‘void bfs()’: user.cpp:16:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[node].size();i++) ^ user.cpp:20:86: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(marked[newn]&&(val[newn]==0||val[newn]>(v[newn].size()-vecmarcati[newn]))) ^ user.cpp:22:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[newn].size();j++) ^ user.cpp:33:80: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(marked[node]&&(val[node]==0||val[node]>v[node].size()-vecmarcati[node])) ^ user.cpp:35:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[node].size();i++) ^