Compilare: user.cpp: In function ‘void dijkstra()’: user.cpp:30:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[a].size(); ++i) ^ user.cpp:31:86: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (v[a][i].cost + b < dist[v[a][i].nod] || v[a][i].cost + b == dist[v[a][i].nod] && (frt[a] == -1 ? a:frt[a]) < frt[v[a][i].nod]) ^