Compilare: main.cpp: In function 'void sol(long long int)': main.cpp:32:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v.size()==k){ ~~~~~~~~^~~ main.cpp:33:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ll i=0;i<v.size();i++) ~^~~~~~~~~ main.cpp:36:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] }else if(v.size()<k){ ~~~~~~~~^~