#include <bits/stdc++.h> #include <atcoder/all> using namespace std; using namespace atcoder; typedef int64_t lint; #define rep(i, n) for(int i=0; i<n; i++) #define repx(i, l, n) for(int i=l; i<n; i++) #define all(v) v.begin(), v.end() #define show(x) cout << #x << ": " << x << endl; #define list(x) cout << #x << ": " << x << " "; #define pb push_back using vi = vector<lint>; using vvi = vector<vector<lint>>; template<class T> inline void vin(vector<T>& v) { rep(i, v.size()) cin >> v.at(i); } template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; } template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; } template<class T> inline void drop(T x) { cout << x << endl; exit(0); } template<class T> void vout(vector<T> v) { rep(i, v.size()) { cout << v.at(i) << ' '; } cout << endl; } constexpr lint LINF = LLONG_MAX/2; using mint = modint1000000007; using vm = vector<mint>; using vvm = vector<vm>; int main() { lint N; cin >> N; if (N <= 3) drop(0); mint a=0, b=0, c=0, x, y, z; vvm dp(N-3, vm(16)), dp1(N-3, vm(16)); rep(i, 16) dp[0][i] = 1; dp1[0][10] = 1; rep(i, N-4) { rep(j, 16) { if (j == 10) continue; dp[i+1][(j*2)%16] += dp[i][j]; dp[i+1][(j*2+1)%16] += dp[i][j]; } dp1[i+1][10] += dp[i+1][10]; rep(j, 16) { dp1[i+1][(j*2)%16] += dp1[i][j]; dp1[i+1][(j*2+1)%16] += dp1[i][j]; } } rep(i, 16) a += dp1[N-4][i]; std::cout << a.val() << '\n'; }