from numpy import*
from numpy.linalg import*
n = int(input("n: "))
n2 = int(input("n: "))
vat = 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
v = zeros(7, dtype=int)
for i in range(7):
	v[i] = aux
	aux = aux + 111
	
for i in range(7):
	if(n == v[i]):
		a = i
	if(n2 == v[i]):
		b = i
print(vat[a,b])
	