Compilare: user.cpp: In function ‘void dijkstra()’: user.cpp:34:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < g[crnode].size(); j++) { ^ user.cpp:20:13: warning: unused variable ‘visited_nodes’ [-Wunused-variable] int visited_nodes = 0, crnode; ^ user.cpp:36:90: warning: ‘crnode’ may be used uninitialized in this function [-Wmaybe-uninitialized] d[g[crnode][j].node] = min(d[g[crnode][j].node], d[crnode] + g[crnode][j].cost); ^