Compilare: main.cpp: In function 'void upd(long long int, long long int, long long int, long long int)': main.cpp:38:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(long long j=py;j<aib[ind][i].size();j+=lsb(j)) ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:64:15: warning: unused variable 't' [-Wunused-variable] long long t,n,m,i; ^ main.cpp:64:19: warning: unused variable 'm' [-Wunused-variable] long long t,n,m,i; ^