Compilare: main.cpp: In function 'std::vector<long long int> long_monoton(long long int, long long int, bool)': main.cpp:54:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<ac[m-1].size(); j++){ac[m].pb(ac[m-1][j]);} ac[m].pb(a[i]); ln=max(ln, m); ~^~~~~~~~~~~~~~~ main.cpp:78:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<ac[m-1].size(); j++){ac[m].pb(ac[m-1][j]);} ac[m].pb(a[i]); ln=max(ln, m); ~^~~~~~~~~~~~~~~ main.cpp: In function 'int32_t main()': main.cpp:93:11: warning: variable 'im' set but not used [-Wunused-but-set-variable] int mx=0, im=0; ^~