Compilare: user.cpp: In function ‘void dijkstra(int, costuri*)’: user.cpp:55:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<vecini[x].v.size();i++){ ^ user.cpp:63:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<nod.size();i++){ ^ user.cpp:64:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<vecini[nod[i]].v.size();j++){ ^