#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
期待値の線形性 E[X+Y]=E[X]+E[Y]
確率変数が独立であれば E[XY]=E[X]E[Y]
"""

P, C = map(int, raw_input().split())

prime = [2,3,5,7,11,13]
compo = [4,6,8,9,10,12]

exp_p = sum(prime)/6.0
exp_c = sum(compo)/6.0

print exp_p ** P * exp_c ** C