from numpy import *
from numpy.linalg import *

m = 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 = int(input("insira a entada:"))
b = int(input("insira a entada:"))

a1 = (a//111) - 1
b1 = (b//111) - 1

d = 0

while(a != -1)and (b != -1):
	d = d + m[a1,b1]
	a1 = (b//111) - 1
	b = int(input("insira a entada:"))
	b1 = b//(111)-1

print(d)