Rabbits

import sys
import array

def fib(n):
    return ((1+ 5**(1/2))**n - (1 - 5**(1/2))**n)/ (2**n * 5**(1/2))


def main():
    a,b = input().split()

    n = 0
    month = 0

    if int(b) == 1:
        print(2)
        return 0

    if int(a) == 2:
        month+=1
    else:
        month -=1

    while(True):
        if (fib(n)+fib(n-1))*2 > int(a):
            month +=1

        if (fib(n)+fib(n-1))*2 > int(b):
            print(month)
            return 0
        
        n+=1

if __name__ == "__main__":
    main()

Test 1

Verdict: WRONG ANSWER

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: WRONG ANSWER

Test 7

Verdict: WRONG ANSWER

Test 8

Verdict: WRONG ANSWER

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: WRONG ANSWER

Test 12

Verdict: WRONG ANSWER

Test 13

Verdict: WRONG ANSWER

Test 14

Verdict: WRONG ANSWER

Test 15

Verdict: WRONG ANSWER

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: ACCEPTED

Test 19

Verdict: WRONG ANSWER

Test 20

Verdict: WRONG ANSWER

Test 21

Verdict: ACCEPTED

Test 22

Verdict: ACCEPTED

Test 23

Verdict: ACCEPTED