# | Line 28 | Line 28 | |
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28 | * @author Martin Buchholz | |
29 | */ | |
30 | ||
31 | < | import java.util.*; |
31 | > | import java.util.Collections; |
32 | > | import java.util.IdentityHashMap; |
33 | > | import java.util.Map; |
34 | > | import java.util.Set; |
35 | ||
36 | public class SetFromMap { | |
37 | static volatile int passed = 0, failed = 0; |
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