(1) explicit multiset( const Compare& comp = Compare(),
const Allocator& alloc = Allocator() ); (until C++14) multiset() : multiset( Compare() ) {}
explicit multiset( const Compare& comp,
const Allocator& alloc = Allocator() ); (since C++14) explicit multiset( const Allocator& alloc ); (1) (since C++11) (2) template< class InputIterator >
multiset( InputIterator first, InputIterator last,
const Comp