/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
{
ints.add(1);
HashSet
<Number
> nums
= (HashSet
<Number
>)((HashSet)ints
); }
}
}
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