func main()
	var n: int :: cui@inputInt()
	var s: []char :: cui@input()
	var ans: []char :: "UEC"
	var f: bool :: false
	for i(0, ^s - 1)
		if(f)
			do ans :~ [s[i]]
		end if
		if(s[i] = 'c')
			do f :: true
		end if
	end for
	do cui@print("\{ans}\n")
end func