/* 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 randomNumber = 0;
    	if (Math.random() > 0.5) {
        	randomNumber = 1 + (int) (Math.random() * 9);
    	} else {
        	randomNumber = 10 + (int) (Math.random() * 90);
	    }
	    System.out.println(randomNumber);
	}
}

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