from numpy import *
from numpy.linalg import *
c1 = input('digite a cidade 1: ')

matr = 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]])


t = 0
i = 0
j = 1
while(c1 != "-1"):
	if(i != j):
		i = int(c1[0]) - 1
		c1 = input('digite novamente: ')
	if(c1 != "-1"):
		j = int(c1[0]) - 1
		t = t + matr[i,j]
		c1 = input('digite novamente: ')
		i = j
print(t)	