Tugas irfan 18 sep 19

x = 1
y = 1
z = 0
j = 0
print("n = ?")
n1 = input()
n = int(n1)
n2 = n
if (n2 == 1 or n2 == 2):
   z = 1
else:
   while(j < n - 2 ):
       z = x + y
       x = y
       y = z
       j = j + 1
print("suku ke " + n1 + ":")
print(z)