public class Josephus{
	
	static class Node{
		int val;
		Node next;
		
		Node(int v){
			val = v;
		}
	}

	public static void main(String[] args){
		int n = Integer.parseInt(args[0]);
		int m = Integer.parseInt(args[1]);
		Node start = new Node(1);
		Node x = start;
		for(int i = 2; i <=n; i++){
			x.next = new Node(i);
			x = x.next;
		}
		//x is last node, link x to start
		x.next = start;
		
		//eliminate the first node: set next reference of last node to be the second node
		x.next = x.next.next;
		while(x != x.next){
			for(int i = 1; i < m; i++){
			//skip m-1 nodes
				x = x.next;
			}
			//System.out.println("eliminating person " + x.next.val);
			//eliminate mth node
			x.next = x.next.next;
		}
		System.out.println("Survivor is person " + x.val);
	}
}