package main

import . "fmt"
import . "math/big"

func main() {
	n, m := new(Int), new(Int)
	Scan(n, m)
	mod := NewInt(1e9+7)
	x := new(Int).Exp(NewInt(2), m, mod)
	y := new(Int).Mod(new(Int).Add(x, NewInt(1e9+6)), mod)
	w := new(Int).ModInverse(NewInt(2), mod)
	r := new(Int).Mod(new(Int).Mul(y, w), mod)
	Println(r)
}