Compilare: user.cpp: In function ‘void read()’: user.cpp:30:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<g[1].size(); i++)d[g[1][i].first]=g[1][i].second; ^ user.cpp: In function ‘void dijkstra()’: user.cpp:44:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<g[node].size(); j++){ ^ user.cpp:45:75: warning: ‘node’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(!visitedNodes[g[node][j].first]&&d[g[node][j].first]>d[node]+g[node][j].second){ ^