#include <iostream>
int
main(void)
{
int n;
std::cin >> n;
long x = 1;
long b = 2;
while (n != 0)
if (n % 2 == 1)
x = x * b % 1000000007;
}
b = b * b % 1000000007;
n >>= 1;
std::cout << x << std::endl;