def cnt(s):
if s < 0: return 0
if s == 0: return 1
sum = 0
for i in range(1,7):
sum = sum + cnt(s-i)
return sum
sum = 0
for i in range(0, 7, 2):
sum = sum + cnt(i)
print(sum)
ZGVmIGNudChzKToKICAgIGlmIHMgPCAwOiAgcmV0dXJuIDAKICAgIGlmIHMgPT0gMDogcmV0dXJuIDEKICAgIHN1bSA9IDAKICAgIGZvciBpIGluIHJhbmdlKDEsNyk6CiAgICAgICAgc3VtID0gc3VtICsgY250KHMtaSkKICAgIHJldHVybiBzdW0KCnN1bSA9IDAKZm9yIGkgaW4gcmFuZ2UoMCwgNywgMik6CiAgICBzdW0gPSBzdW0gKyBjbnQoaSkKCnByaW50KHN1bSk=