牛客pat乙级真题Python代码

养兔子

l, index = [1, 2], 2
while True:
    l.append(l[index - 1] + l[index - 2])
    index += 1
    if index > 93: break
try:
    while True:
        print(l[eval(input()) - 1])
except EOFError:
    pass

客似云来

l = [1]
a, b, T, i = 1, 0, 1, 0
while True:
    a, b = b, b + a
    T = a + b
    l.append(T)
    i += 1
    if i > 90: break
try:
    while True:
        f, t = map(int, input().split())
        print(sum(l[f - 1:t]))
except EOFError:
    pass