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#include <bits/stdc++.h>

using namespace std;

using ll = long long;
using pii = pair<int, int>;
using vpii = vector<pii>;
using vi = vector<int>;
using vll = vector<long long>;
using mpii = map<int, int>;
using mpll = map<ll, ll>;
using db = long double;

#define pb push_back
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define lb lower_bound
#define ub upper_bound
#define make_unique(x)                                                         \
  sort(all((x)));                                                              \
  (x).resize(unique(all((x))) - (x).begin())
#define ceil(a, b) ((a) + (b)-1) / (b)

const int mod = (int)1e9 + 7;
const db pi = acos((db)-1);
const int dx[4]{1, 0, -1, 0};
const int dy[4]{0, 1, 0, -1};

#ifdef LOCAL
#include "debug.h"
#else
#define dbg(...) 42
#endif

/* stuff you should look for:
  ---------------------------
   * special cases (n=1?)
   * int overflow, array bounds
   * do smth instead of nothing and stay organized
   * WRITE STUFF DOWN
   * DON'T GET STUCK ON ONE APPROACH
 */
// 5
// 1 1 1 1 1
// 2 1 2
// 1 2 2
// 2 1 2
// 2 2 1
// 1 1 3
// 3 1 1
// 1 3 1
// 3 2
// 2 3
// 4 1
// 1 4
// 5

// 4
// 1 1 1 1
// 2 1 1
// 1 2 1
// 3 1
// 1 1 2
// 2 2
// 1 3
// 4

// 3
// 1 1 1
// 2 1
// 1 2
// 3

// 2
// 1 1
// 2

// 1
// 1
//

// 1 2 4 8 13
//

void solve() {
  int n;
  cin >> n;
  ll sum = 0;
  vector<ll> dp(n + 1);
  dp[0] = 1;
  dp[1] = 1;
  for (int i = 2; i <= n; i++) {
    for (int j = 0; j < min(6, i); j++) {
      dp[i] = (dp[i] + dp[i - j - 1]) % mod;
    }
  }
  cout << dp[n] << '\n';
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  solve();
}