Compilare: main.cpp: In function 'void dijkstra(int)': main.cpp:61:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<L[poz].size();i++) ~^~~~~~~~~~~~~~ main.cpp:44:21: warning: unused variable 'z' [-Wunused-variable] int i,poz,c,j,v,z; ^ main.cpp:49:15: warning: iteration 3299 invokes undefined behavior [-Waggressive-loop-optimizations] D[i][j]=pinf; ^ main.cpp:48:15: note: within this loop for(j=1;j<=3300;j++) ~^~~~~~