Compilare: main.cpp: In function 'int main()': main.cpp:49:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = primaSectiune; i < oi.size(); i++) ~~^~~~~~~~~~~ main.cpp:45:10: warning: 'lana' may be used uninitialized in this function [-Wmaybe-uninitialized] lana += pq.top().second; ~~~~~^~~~~~~~~~~~~~~~~~