def make_pi(n):
	q, r, t, k, m, x = 1, 0, 1, 1, 3, 3
	for j in range(n+100):
		if 4 * q + r - t < m * t:
			yield m
			q, r, t, k, m, x = 10*q, 10*(r-m*t), t, k, (10*(3*q+r))//t - 10*m, x
		else:
			q, r, t, k, m, x = q*k, (2*q+r)*x, t*x, k+1, (q*(7*k+2)+r*x)//(t*x), x+2


def main():
	s = input()
	if s[0] != '3':
		print(s[0],'3')
		return
	if s[1] != '.':
		print(s[1],'.')
		return
	digits = make_pi(len(s))
	pi_list = []
	my_array = []
	for i in make_pi():
		my_array.append(str(i))
	for i in range(len(s)):
		if s[2+i]!=my_array[1+i]:
			print(s[2+i],my_array[1+i])
			return
main()