#pragma GCC optimize("Ofast") #include using namespace std; typedef long long int ll; typedef unsigned long long ull; mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count()); ll myRand(ll B) { return (ull)rng() % B; } int main(){ cin.tie(nullptr); ios::sync_with_stdio(false); int n; cin >> n; vector a(n); vector b(n); for(int i=0;i> a[i]; b[i]=i; } sort(b.begin(), b.end(),[&](auto i,auto j){ return a[i] res={b[0]}; for(int i=2;i<=n;i+=2){ res.push_back(b[i-1]); } if(n%2==1){ for(int i=n;i>=3;i-=2){ res.push_back(b[i-1]); } } else{ for(int i=n-1;i>=3;i-=2){ res.push_back(b[i-1]); } } for(int i=0;i