Compilare: user.cpp: In function ‘int main()’: user.cpp:24:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ll i = 2; i <= n; ++i){ ~~^~~~ user.cpp:32:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ll j = 1; j <= n; ++j){ ~~^~~~ user.cpp:33:36: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] c[(ll)(((number*)&a[j])->dig[i])] ++; ^~ user.cpp:39:38: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] b[c[(ll)(((number*)&a[j])->dig[i])]] = a[j]; ^~ user.cpp:40:36: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] c[(ll)(((number*)&a[j])->dig[i])]--; ^~ user.cpp:42:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ll j = 1; j <= n; ++j){ ~~^~~~ user.cpp:46:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ll i = 1; i <= n; i += 10){ ~~^~~~