import sys
input = lambda :sys.stdin.readline().rstrip()
ii = lambda: int(input())
mi = lambda: map(int, input().split())
ms = lambda: map(str, input().split())
mf = lambda: map(float, input().split())
li = lambda: list(mi())

def main():
    N = ii()
    F = []
    for i in range(1000):
        if(i == 0 or i == 1): F.append(1)
        else: F.append((F[-1] + F[-2]) % N)
        if(F[-1] % N == 0):
            print(i + 1)
            return

if __name__ == '__main__':
    main()