from sys import setrecursionlimit
setrecursionlimit(1000000)

fibs = {}
frames = 0
# Pre-seed with the first couple
# This IS our base case
# We don't need a separate base case then
fibs[1] = 1
fibs[2] = 1

def fib(x):
    global frames
    frames += 1
    if x in fibs:
        return fibs[x]
    fx = fib(x-1) + fib(x-2)
    fibs[x] = fx
    return fx

# CYthon crashes if we go more than 20,000 at once
# pypy crashes sooner than that
# Interpreter weaknesss...we can work around it
print(fib(20000))
print(fib(40000))
print(fib(60000))

# warmup for the big one
for i in range(60000,1000000,20000):
    fib(i)
    print(str(int(i/1000)) + "K")

# Now we're ready!
print(fib(1000000))