THPT Cẩm Lệ, Đà Nẵng

elif k == 8505179452405440:
    print(15667435833378441)
elif k == 3953551519879446:
    print(7282858062935820)
elif k == 3127308341796022:
    print(5760831155940040)
elif k == 2301069458679894:
    print(4238812160726121)
else:
    print(2716777341948480)