#include "iostream"
using namespace std;

int main() {

    long long num;

    cin >> num;

    long long pepa = 1;

    for (int i = 1; i <= num-2; ++i) {
        pepa = (pepa << 1)%(1000000007);
    }

    pepa = (num*pepa)%(1000000007);

    pepa = pepa/2;

    cout << pepa << endl;

    return 0;
}