Compilare: user.cpp: In function ‘void dijkstra(int)’: user.cpp:32:5: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(int i =1 ; i <=N; i++) ^~~ user.cpp:34:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ d[r]=0; ^ user.cpp:42:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < G[k].size(); i++) ~~^~~~~~~~~~~~~ user.cpp: In function ‘int Reconstruct(int)’: user.cpp:65:1: warning: control reaches end of non-void function [-Wreturn-type] } ^