func_code_string: #include <bits/stdc++.h>   using namespace std;   vector<long long> nclaws(2000001, 0);   void solve() {     int n;     cin >> n;     cout << ((nclaws[n] * 4) % 1000000007) << endl;   }   int main() {     ios::sync_with_stdio(false);     cin.tie(0);     nclaws[1] = 0;     nclaws[2] = 0;     nclaws[3] = 1;     nclaws[4] = 1;     for (int i = 5; i < 2000001; i++) {       nclaws[i] = nclaws[i - 1] + 2 * nclaws[i - 2];       if (i % 3 == 0) nclaws[i]++;       nclaws[i] = nclaws[i] % 1000000007;     }     int t = 1;     cin >> t;     while (t--) solve();   }   