Compilare: main.cpp: In function 'void djk(int)': main.cpp:51:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<g[s].size();i++) ~^~~~~~~~~~~~ main.cpp:63:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<g[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp:47:15: warning: variable 'cost' set but not used [-Wunused-but-set-variable] int i,nod,cost; ^~~~