package main

import "fmt"

func main() {
	var startStr, endStr string
	var n int
	
	fmt.Scan(&startStr, &endStr, &n)

	
	
	
	toInt := func(c string) int {
		switch c {
		case "v":
			return 0
		case "<":
			return 1
		case "^":
			return 2
		case ">":
			return 3
		}
		return 0
	}

	start := toInt(startStr)
	end := toInt(endStr)

	
	n %= 4

	
	cw := (start + n) % 4
	ccw := (start - n + 4) % 4

	
	if cw == end && ccw == end {
		fmt.Println("undefined")
	} else if cw == end {
		fmt.Println("cw")
	} else {
		
		fmt.Println("ccw")
	}
}