#include // {{{ // https://codeforces.com/blog/entry/96344 #pragma GCC optimize("O2,unroll-loops") #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt") using namespace std; template constexpr T MIN = std::numeric_limits::min(); template constexpr T MAX = std::numeric_limits::max(); template [[nodiscard]] static T sc(auto &&x) { return static_cast(x); } template [[nodiscard]] static T sz(auto &&x) { return static_cast(x.size()); } using ll = long long; using ld = long double; template using vec = std::vector; template using arr = std::array; #define ff first #define ss second #define eb emplace_back #define pb push_back #define all(x) (x).begin(), (x).end() #define rall(x) (x).rbegin(), (x).rend() // }}} void solve() { int n; cin >> n; /* n= 5; 1 4 2 5 3 1 4 2 5 3 6 1 7 2 6 3 5 4 41325 */ if (n == 1) { cout << 1 << endl; } else if (n <= 3) { cout << "NO SOLUTION\n"; } else { for (int cur = n & 1 ? n - 1 : n; cur > 4; cur -= 2) { cout << cur << ' '; } cout << "2 4"; for (int cur = 1; cur <= n; cur += 2) { cout << ' ' << cur; } } } int main() { // {{{ cin.tie(nullptr)->sync_with_stdio(false); solve(); return 0; } // }}}