№23 — #23124

from functools import lru_cache
@lru_cache(None)
def f(a, b):
    if a == b:
        return 1
    if a < b:
        return 0
    return f(a - 6, b) + f(a - 7, b) + f(a // 2, b)
@lru_cache(None)
def f1(a, b):
    if a == 20:
        return 0
    if a == b:
        return 1
    if a < b:
        return 0
    return f1(a - 6, b) + f1(a - 7, b) + f1(a // 2, b)
@lru_cache(None)
def f2(a, b):
    if a == 41:
        return 0
    if a == b:
        return 1
    if a < b:
        return 0
    return f2(a - 6, b) + f2(a - 7, b) + f2(a // 2, b)
print(f(95, 41) * f1(41, 3) + f2(95, 20) * f(20, 3))