/* 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
{
{
numbers.add(10);
numbers.add(20);
numbers.add(30);
numbers.add(40);
numbers.add(50);
numbers.remove(3);
}
}
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