from numpy import *
from numpy.linalg import *

n = int(input(""))
n1 = int(input(""))


mat = array([[0,2,11,6,15,11,1],
			 [2,0,7,12,4,2,15],
			 [11,7,0,11,8,3,13],
			 [6,12,11,0,10,2,1],
			 [15,4,8,10,0,5,13],
			 [11,2,3,2,5,0,14],
			 [1,15,13,1,13,14,0]])

a = 1
b = 0
aux = 111
vet = zeros(7, dtype=int)

for i in range(7):
	vet[i]=aux
	aux+=111
for i in range(7):
	if(n==vet[i]):
		a=i
	if (n1==vet[i]):
		b=i
print(mat[a,b])

		