import java.io.*;

class divisor {

	/* Recursive method */
	int common_divisor(int x, int y) {
		if(y == 0)
			return x;
		else

			/* Call the common_divisor method inside in it */
			return common_divisor(y, x % y);
	}
}

class lcm {
	public static void main(String args[ ]) {
		int a, b, gcd, lcm;
		divisor d = new divisor();
		a = Integer.parseInt(args[0]);
		b = Integer.parseInt(args[1]);
		gcd = d.common_divisor(a,b);
		lcm = (a * b) / gcd;
		System.out.println("Lcm value: "+lcm);
	}
}


          /****** Output ******/
          
java lcm 30 20

LCM value: 60