Compilare: main.cpp: In function 'void dijkstra()': main.cpp:101:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:130:9: warning: unused variable 'x' [-Wunused-variable] int x,y; ^ main.cpp:130:11: warning: unused variable 'y' [-Wunused-variable] int x,y; ^ main.cpp: In function 'void dijkstra()': main.cpp:91:37: warning: iteration 1004 invokes undefined behavior [-Waggressive-loop-optimizations] for(int i=1;i<=NMAX;i++) dist[i]=INF; ~~~~~~~^~~~ main.cpp:91:18: note: within this loop for(int i=1;i<=NMAX;i++) dist[i]=INF; ~^~~~~~