First,

a equals input()

Second,

a equals a.split()

a equals int(a[0])*2 + int(a[1])

a equals a % 3

Follow the codes provided here,

if a == 0:

    print('普通')

elif a == 1:

    print('吉')

elif a == 2:

    print('大吉')

.split() will split an input into two