結果

問題 No.2719 Equal Inner Products in Permutation
ユーザー tokusakuraitokusakurai
提出日時 2024-04-05 23:06:18
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 37 ms / 2,000 ms
コード長 5,501 bytes
コンパイル時間 2,380 ms
コンパイル使用メモリ 205,960 KB
実行使用メモリ 9,540 KB
最終ジャッジ日時 2024-10-01 03:01:50
合計ジャッジ時間 6,561 ms
ジャッジサーバーID
(参考情報)
judge2 / judge4
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 1 ms
5,248 KB
testcase_01 AC 1 ms
5,248 KB
testcase_02 AC 1 ms
5,248 KB
testcase_03 AC 2 ms
5,248 KB
testcase_04 AC 2 ms
5,248 KB
testcase_05 AC 1 ms
5,248 KB
testcase_06 AC 2 ms
5,248 KB
testcase_07 AC 1 ms
5,248 KB
testcase_08 AC 2 ms
5,248 KB
testcase_09 AC 2 ms
5,248 KB
testcase_10 AC 2 ms
5,248 KB
testcase_11 AC 2 ms
5,248 KB
testcase_12 AC 2 ms
5,248 KB
testcase_13 AC 2 ms
5,248 KB
testcase_14 AC 2 ms
5,248 KB
testcase_15 AC 30 ms
8,416 KB
testcase_16 AC 36 ms
9,128 KB
testcase_17 AC 21 ms
6,912 KB
testcase_18 AC 33 ms
9,216 KB
testcase_19 AC 28 ms
8,192 KB
testcase_20 AC 19 ms
6,528 KB
testcase_21 AC 33 ms
9,288 KB
testcase_22 AC 26 ms
7,552 KB
testcase_23 AC 23 ms
7,168 KB
testcase_24 AC 19 ms
6,400 KB
testcase_25 AC 37 ms
9,540 KB
testcase_26 AC 35 ms
9,472 KB
testcase_27 AC 35 ms
9,472 KB
testcase_28 AC 36 ms
9,432 KB
testcase_29 AC 34 ms
9,344 KB
testcase_30 AC 35 ms
9,528 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (n); i++)
#define per(i, n) for (int i = (n)-1; i >= 0; i--)
#define rep2(i, l, r) for (int i = (l); i < (r); i++)
#define per2(i, l, r) for (int i = (r)-1; i >= (l); i--)
#define each(e, v) for (auto &e : v)
#define MM << " " <<
#define pb push_back
#define eb emplace_back
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
#define sz(x) (int)x.size()
using ll = long long;
using pii = pair<int, int>;
using pil = pair<int, ll>;
using pli = pair<ll, int>;
using pll = pair<ll, ll>;

template <typename T>
using minheap = priority_queue<T, vector<T>, greater<T>>;

template <typename T>
using maxheap = priority_queue<T>;

template <typename T>
bool chmax(T &x, const T &y) {
    return (x < y) ? (x = y, true) : false;
}

template <typename T>
bool chmin(T &x, const T &y) {
    return (x > y) ? (x = y, true) : false;
}

template <typename T>
int flg(T x, int i) {
    return (x >> i) & 1;
}

int pct(int x) { return __builtin_popcount(x); }
int pct(ll x) { return __builtin_popcountll(x); }
int topbit(int x) { return (x == 0 ? -1 : 31 - __builtin_clz(x)); }
int topbit(ll x) { return (x == 0 ? -1 : 63 - __builtin_clzll(x)); }
int botbit(int x) { return (x == 0 ? -1 : __builtin_ctz(x)); }
int botbit(ll x) { return (x == 0 ? -1 : __builtin_ctzll(x)); }

template <typename T>
void print(const vector<T> &v, T x = 0) {
    int n = v.size();
    for (int i = 0; i < n; i++) cout << v[i] + x << (i == n - 1 ? '\n' : ' ');
    if (v.empty()) cout << '\n';
}

template <typename T>
void printn(const vector<T> &v, T x = 0) {
    int n = v.size();
    for (int i = 0; i < n; i++) cout << v[i] + x << '\n';
}

template <typename T>
void err_print(const vector<T> &v, T x = 0) {
    int n = v.size();
    for (int i = 0; i < n; i++) cerr << v[i] + x << ' ';
    cerr << endl;
}

template <typename T>
int lb(const vector<T> &v, T x) {
    return lower_bound(begin(v), end(v), x) - begin(v);
}

template <typename T>
int ub(const vector<T> &v, T x) {
    return upper_bound(begin(v), end(v), x) - begin(v);
}

template <typename T>
void rearrange(vector<T> &v) {
    sort(begin(v), end(v));
    v.erase(unique(begin(v), end(v)), end(v));
}

template <typename T>
vector<int> id_sort(const vector<T> &v, bool greater = false) {
    int n = v.size();
    vector<int> ret(n);
    iota(begin(ret), end(ret), 0);
    sort(begin(ret), end(ret), [&](int i, int j) { return greater ? v[i] > v[j] : v[i] < v[j]; });
    return ret;
}

template <typename T>
void reorder(vector<T> &a, const vector<int> &ord) {
    int n = a.size();
    vector<T> b(n);
    for (int i = 0; i < n; i++) b[i] = a[ord[i]];
    swap(a, b);
}

template <typename T>
T floor(T x, T y) {
    assert(y != 0);
    if (y < 0) x = -x, y = -y;
    return (x >= 0 ? x / y : (x - y + 1) / y);
}

template <typename T>
T ceil(T x, T y) {
    assert(y != 0);
    if (y < 0) x = -x, y = -y;
    return (x >= 0 ? (x + y - 1) / y : x / y);
}

template <typename S, typename T>
pair<S, T> operator+(const pair<S, T> &p, const pair<S, T> &q) {
    return make_pair(p.first + q.first, p.second + q.second);
}

template <typename S, typename T>
pair<S, T> operator-(const pair<S, T> &p, const pair<S, T> &q) {
    return make_pair(p.first - q.first, p.second - q.second);
}

template <typename S, typename T>
istream &operator>>(istream &is, pair<S, T> &p) {
    S a;
    T b;
    is >> a >> b;
    p = make_pair(a, b);
    return is;
}

template <typename S, typename T>
ostream &operator<<(ostream &os, const pair<S, T> &p) {
    return os << p.first << ' ' << p.second;
}

struct io_setup {
    io_setup() {
        ios_base::sync_with_stdio(false);
        cin.tie(NULL);
        cout << fixed << setprecision(15);
        cerr << fixed << setprecision(15);
    }
} io_setup;

constexpr int inf = (1 << 30) - 1;
constexpr ll INF = (1LL << 60) - 1;
// constexpr int MOD = 1000000007;
constexpr int MOD = 998244353;

void solve() {
    ll N;
    cin >> N;

    if (N == 1) {
        cout << "-1\n";
        return;
    }

    if (N == 5) {
        cout << "1 2 4 8 14 3 6 9 12 15 13 10 11 7 5 \n";
        return;
    }

    ll S = N * (N + 1) / 2;
    ll X = (S % 2 == 0 ? S / 2 : (S - 3) / 2);

    vector<ll> col(N + 1, 0); // 0: S-X, 1: X
    per2(i, 1, N + 1) {
        if (X < i) continue;
        X -= i;
        col[i] = 1;
    }

    if (S % 2 == 1 && col[1] == 1) {
        int y = 2;
        while (col[y] == 0) y++;
        assert(y >= 6);
        col[3] = 1;
        col[y - 2] = 1;
        col[1] = 0;
        col[y] = 0;
    }
    if (S % 2 == 1 && col[2] == 1) {
        int y = 3;
        while (col[y] == 0) y++;
        assert(y >= 5);
        col[3] = 1;
        col[y - 1] = 1;
        col[2] = 0;
        col[y] = 0;
    }

    // err_print(col);

    vector<ll> ans(3 * N);
    rep(i, N) {
        ans[N + i] = 3 * (i + 1);
        if (col[i + 1] == 0) {
            ans[i] = 3 * i + 2;
            ans[2 * N + i] = 3 * i + 1;
        } else {
            ans[i] = 3 * i + 1;
            ans[2 * N + i] = 3 * i + 2;
        }
    }

    // err_print(ans);

    if (S % 2 == 1) {
        ans[0] = 1;
        ans[1] = 4;
        ans[2 * N] = 5;
        ans[2 * N + 1] = 2;
    }

    ll x = 0, y = 0;
    rep(i, N) x += ans[i] * ans[N + i];
    rep(i, N) y += ans[N + i] * ans[2 * N + i];
    // cerr << x MM y << endl;
    assert(x == y);

    print(ans);
}

int main() {
    int T = 1;
    // cin >> T;
    while (T--) solve();
}
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