local mfl, mce = math.floor, math.ceil
local mod = 1000000007
local function badd(x, y) return (x + y) % mod end

local function bmul(x, y)
  local x1, y1 = mfl(x / 31623), mfl(y / 31623)
  local x0, y0 = x - x1 * 31623, y - y1 * 31623
  return (x1 * y1 * 14122 + (x1 * y0 + x0 * y1) * 31623 + x0 * y0) % mod
end

local function modpow(src, pow)
  local res = 1
  while 0 < pow do
    if pow % 2LL == 1LL then
      res = bmul(res, src)
    end
    src = bmul(src, src)
    pow = pow / 2LL
  end
  return res
end

local ffi = require("ffi")
local C = ffi.C
ffi.cdef[[
long long atoll(const char*);
]]

local function lltonumber(str)
  return C.atoll(str)
end
local n, m = io.read():match("(%d+) (%d+)")
n = lltonumber(n)
m = lltonumber(m)
m = m % 1000000006LL
local ret = modpow(2, m)
ret = badd(ret, 1000000007-1)
ret = bmul(ret, 500000004)
print(ret)