Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:16:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] {viz[x]=1;for(int i=0; i<G[x].size(); i++){int v=G[x][i].first, w=G[x][i].second;if(w <= dist && !viz[v]){if(Dmax[v] > Max)Max=Dmax[v];DFS(v);}}} ^ user.cpp: In function ‘int main()’: user.cpp:25:157: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(!Q.empty()){u=Q.front().first;dcrt=Q.front().second;Q.pop();inqueue[u][dcrt]=0;dist=D[u][dcrt];if(Dmax[dcrt]<Dmax[u]) dcrt=u;for(i=0; i<G[u].size(); i++){v=G[u][i].first;w=G[u][i].second;if(Dmax[dcrt] < w) continue;if(v==n && dist+w<sol){sol=dist+w;continue;}if(dist+w<D[v][dcrt]){D[v][dcrt]=dist+w;if(!inqueue[v][dcrt]){Q.push(nod(v,dcrt));inqueue[v][dcrt]=1;}}}} ^