Compilare: main.cpp: In function 'void bfs()': main.cpp:65:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[nod].size(); ++i) { ~~^~~~~~~~~~~~~~~ main.cpp:67:62: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if (cost[it.nod] || it.cost == it.flux || it.flux == 0 && it.cost < 0) ~~~~~~~~~~~~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:94:19: warning: 'aux' may be used uninitialized in this function [-Wmaybe-uninitialized] v[x].push_back({y, z, 0, aux}); ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~