Compilare: user.cpp: In function ‘void cut1()’: user.cpp:22:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(poz*2<co.size()) ^ user.cpp:24:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz*2+1>co.size()-1 || co[poz*2].price<co[poz*2+1].price) ^ user.cpp: In function ‘void bfs()’: user.cpp:58:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<mat[co[1].nod].vecini.size();i++) ^