from numpy import*
from numpy.linalg import*
n = int(input("digite1:"))
n2 = int(input("digite2:"))
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(n2==vet[i]):
		b=i
print(mat[a,b])