#!/usr/bin/env python3
p, c = map(int, input().split())
dice_p = [ 2,3,5,7,11,13 ]
dice_c = [ 4,6,8,9,10,12 ]
ans = pow(sum(dice_p)/6, p) * pow(sum(dice_c)/6, c)
print('%.12f' % ans)