#! ruby
# Try yukicoder
# author: Leornadone @ NEETSDKASU

N = gets.to_i
S = gets.chomp

# S[i,j]
# S[j+1,j+(j+1-i)] = S[j+1,j+1+(j-i)]

m = Hash.new

msk = (1 << N) - 1
s2 = S.to_i(2)

N.times do |i|
	st = s2 & msk
	(N - i).times do |j|
		if m.include? st
			b = i - (N - i - j)
			if m[st].include? b
				puts "YES"
				exit
			end
			m[st][i] = true
		else
			m[st] = {i => true}
		end
		st >>= 1
	end
	msk >>= 1
end

puts "NO"