from numpy import *
from numpy.linalg import *
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]])
c1 = int(input("cidade1: "))
c2 = int(input("cidade2: "))
x = c1//111-1
y = c2//111-1
print(mat[x,y])