/* 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
{
	public static void main (String[] args) throws java.lang.Exception
	{
 
	int[] a = new int[4];
	a[0]=0;
	a[1]=1;
 
	a[3]=3;
 
 
		System.out.println("a0="+a[0]);
			System.out.println("a1="+a[1]);
				System.out.println("a2="+a[2]);
					System.out.println("a3="+a[3]);
	}
}

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