def getFibNExt(n):
    fibAr = [0, 1, 0]
    for i in range((n - 1)):
        fibAr[2] = fibAr[0]
        fibAr[0] += fibAr[1]
        fibAr[1] = fibAr[2]
    return fibAr[0]
def getFibNExt(n):
    fibAr = [0, 1, 0]
    for i in range((n - 1)):
        fibAr[2] = fibAr[0]
        fibAr[0] += fibAr[1]
        fibAr[1] = fibAr[2]
    return fibAr[0]