N = gets.chomp
runs = []
prev = ?0
N.each_char do |c|
    if c == ?1
        if prev == ?1
            runs[-1] += 1
        else
            runs << 1
        end
    end
    prev = c
end

ans = runs.sum { |x| [x, 2].min }
puts ans == 2 ? "Yes" : "No"