table = [[0],[1],[2,4,8,6],[3,9,7,1],[4,6],[5],[6],[7,9,3,1],[8,4,2,6],[9,1]]

n = gets.chomp
m = gets.to_i
idx = n[-1].to_i
if m == 0
    p 1
    exit
end
case idx
when 2,3,7,8
    p table[idx][(m - 1) % 4]
when 4,9
    p table[idx][(m - 1) % 2]
else
    p table[idx][0]
end