109 lines
1.9 KiB
C++
109 lines
1.9 KiB
C++
#include <bits/stdc++.h> // {{{
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// https://codeforces.com/blog/entry/96344
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#pragma GCC optimize("O2,unroll-loops")
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#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
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using namespace std;
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using i32 = int32_t;
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using u32 = uint32_t;
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using i64 = int64_t;
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using u64 = uint64_t;
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using f64 = double;
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using f128 = long double;
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#if __cplusplus >= 202002L
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template <typename T>
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constexpr T MIN = std::numeric_limits<T>::min();
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template <typename T>
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constexpr T MAX = std::numeric_limits<T>::max();
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template <typename T>
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[[nodiscard]] static T sc(auto&& x) {
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return static_cast<T>(x);
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}
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template <typename T>
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[[nodiscard]] static T sz(auto&& x) {
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return static_cast<T>(x.size());
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}
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#endif
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static void NO() {
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std::cout << "NO\n";
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}
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static void YES() {
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std::cout << "YES\n";
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}
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template <typename T>
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using vec = std::vector<T>;
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#define all(x) (x).begin(), (x).end()
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#define rall(x) (x).rbegin(), (x).rend()
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#define ff first
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#define ss second
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#ifdef LOCAL
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#define db(...) std::print(__VA_ARGS__)
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#define dbln(...) std::println(__VA_ARGS__)
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#else
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#define db(...)
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#define dbln(...)
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#endif
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// }}}
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void solve() {
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u32 n;
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cin >> n;
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if (n == 3) {
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cout << "1 2 3\n";
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return;
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}
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vec<u32> a(n, 0);
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u32 odd_slots = n / 2;
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u32 even_slots = ceil(n / 2.0);
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for (u32 i = 0; i < n; i += 2) {
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a[i] = i / 2 + 1;
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if (i + 1 < n)
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a[i + 1] = a[i] | ((u32)1 << 30);
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}
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if (n & 1) {
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a[n - 1] = 0;
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}
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if (odd_slots & 1) {
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a[odd_slots * 2 - 3] ^= a[odd_slots * 2 - 1];
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a[odd_slots * 2 - 1] = (u32)1 << 29;
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a[odd_slots * 2 - 3] |= (u32)1 << 29;
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a[odd_slots * 2 - 3] |= (u32)1 << 30;
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}
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for (u32 i = 0; i < n; ++i) {
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cout << a[i] << " \n"[i == n - 1];
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}
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}
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int main() { // {{{
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cin.tie(nullptr)->sync_with_stdio(false);
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cin.exceptions(cin.failbit);
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u32 tc = 1;
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cin >> tc;
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for (u32 t = 0; t < tc; ++t) {
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solve();
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}
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return 0;
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}
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// }}}
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