#pragma GCC optimize("Ofast") #include #include #include #include #include #include #include #include #include const long long INF_L = 1e17+7; const long long INF_I = 1e9+7; const long long MOD = 1e9+7; const double EPS = 1e-8; const double PI=acos(-1); using namespace std; int main(){ cin.tie(0); ios::sync_with_stdio(false); int n; cin >> n; vector a; if(n%2==0){ for(int i=n;i>(n+1)/2;i--){ a.push_back(i); } }else{ for(int i=n;i>=(n+1)/2;i--){ a.push_back(i); } } sort(a.begin(),a.end()); for(int i=0;i