/* 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 = 9;
switch (a) {
    case 0: System.out.print ("0");
    case 5: System.out.print ("5"); break;
    case 9: System.out.print ("9");
    case 10: System.out.print ("10"); break;
    default: System.out.print ("!");
}
	}
}

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