Compilare: user.cpp: In function ‘void solve()’: user.cpp:50:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(sol.size()<m) ~~~~~~~~~~^~ user.cpp:72:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<cpy.size(); i++) ~^~~~~~~~~~~ user.cpp:71:25: warning: ‘pointer’ may be used uninitialized in this function [-Wmaybe-uninitialized] else poz[pointer]++; ^