def test_ori(a, b):
  tmp = a ** 2 + b ** 2
  sqr = int(tmp ** 0.5)
  if tmp == sqr ** 2: return True
  return False

def test(a, b, c):
  if test_ori(b + c, a): return 1
  return 0

def test1(a, b):
  if test_ori(b + b, a): return 1
  return 0

total = 1975
n = 100
while 1:
  tmp = 0
  for i in xrange(2, 2 * n + 1):
    if test_ori(n, i):
      #print i
      tmp += i / 2
      if i > n:
        tmp -= i - n - 1
  total += tmp
  if total > 1000000:
    break
  #print n, tmp, total
  n += 1

print n