x = 0
y = 1
z = 2
w = 3
generate = ->{
  t = (x ^ (x << 11)) & 0xffffffff
  x, y, z = y, z, w
  w = (w ^ (w >> 19)) ^ (t ^ (t >> 8))
}

x = gets.to_i

min = 2143000000
max = 2153000000
low = high = 0
a = []
1000_0001.times{
  r = generate[]
  if r < min
    low += 1
  elsif r > max
    high += 1
  else
    a << r
  end
}
p a.sort[500_0000-low]