a=eval(input())

b=2

c=1

d=0

count=0

for i in range(a):

    count+=b/c

    d=b

    b=b+c

    c=d

print('%.2f'%(count))

print('[1] apple')

print('[2] pear')

print('[3] orange')

print('[4] grape')

print('[0] exit')

a=input()

a=a.split()

count=0

for i in a:

      if count ==5 or i=='':

          break

      if i<'' or i>'':

          print('price = 0.00')

      if i=='':

          print('price = 3.00')

          count=count+1

      if i == '':

          print('price = 2.50')

          count = count + 1

      if i == '':

          print('price = 4.10')

          count = count + 1

      if i == '':

          print('price = 10.20')

          count = count + 1