From key to value, from value to key

Elapsed time: 3:12:35

Number of threads: > 25.655.654 threads

MST: 84 ms

LST: 65 ms

n: 10

Medium thread time: 395 ms/thread

Modification operations:

- Remove entry from Set<Entry<K,V>> and put to Map<K,V>

- Remove entry from Map<K,V> and add to Set<Entry<K,V>>

(one transaction per thread)