let rec calc r i n k =
	if i==n then r else (calc ((r+k) mod i) (i+1) n k);;

while true do
	Scanf.sscanf (read_line ()) "%d %d %d" (fun n k m ->
		if n==0 then exit(0) else (print_int ((((calc 0 1 n k)+m) mod n)+1)); print_string "\n")
	) done;;