#include <iostream>afads ads fds fdsa fdsafdsa sd ew as fd

using namespace std;afads ads fds fdsa fdsafdsa sd ew as fd

int main() {afads ads fds fdsa fdsafdsa sd ew as fd

    int n;afads ads fds fdsa fdsafdsa sd ew as fd

    cin >> n;afads ads fds fdsa fdsafdsa sd ew as fd

    int peaches = 1;afads ads fds fdsa fdsafdsa sd ew as fd

    for (int i = n-1; i > 0; i--) {afads ads fds fdsa fdsafdsa sd ew as fd

        peaches = (peaches + 1) * 2;afads ads fds fdsa fdsafdsa sd ew as fd

    }afads ads fds fdsa fdsafdsa sd ew as fd

    cout << peaches << endl;afads ads fds fdsa fdsafdsa sd ew as fd

    return 0;afads ads fds fdsa fdsafdsa sd ew as fd

}afads ads fds fdsa fdsafdsa sd ew as fd