/* 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
	{
	}
	public static int gcd(int a, int b)
	{
	int m = a, n = b;
	  while (m != n)
	  {
	  	int diff = m - n;
	  	if (diff > n)
	  	  m = diff;
	  	else 
	  	  {
	  	  	m = n;
	  	  	n = diff;
	  	  }
	  }
	  return m;
}

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