#782974 (C++17) No.5007 Steiner Space Travel

提出ソース

結果

問題	No.5007 Steiner Space Travel
ユーザー	fuppy_kyopro
提出日時	2022-07-30 15:22:34
言語	C++17 (gcc 12.3.0 + boost 1.83.0)
結果	TLE
実行時間	-
コード長	9,833 bytes
コンパイル時間	3,669 ms
実行使用メモリ	4,904 KB
スコア	908,662
最終ジャッジ日時	2022-07-30 15:23:12
合計ジャッジ時間	37,699 ms
ジャッジサーバーID （参考情報）	judge11 / judge15

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	TLE	-
testcase_01	AC	994 ms 4,904 KB
testcase_02	TLE	-
testcase_03	TLE	-
testcase_04	TLE	-
testcase_05	TLE	-
testcase_06	TLE	-
testcase_07	AC	984 ms 4,900 KB
testcase_08	TLE	-
testcase_09	TLE	-
testcase_10	TLE	-
testcase_11	TLE	-
testcase_12	TLE	-
testcase_13	TLE	-
testcase_14	TLE	-
testcase_15	TLE	-
testcase_16	TLE	-
testcase_17	TLE	-
testcase_18	TLE	-
testcase_19	TLE	-
testcase_20	TLE	-
testcase_21	AC	982 ms 4,904 KB
testcase_22	TLE	-
testcase_23	TLE	-
testcase_24	TLE	-
testcase_25	TLE	-
testcase_26	TLE	-
testcase_27	TLE	-
testcase_28	TLE	-
testcase_29	TLE	-

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ソースコード

raw source code

//*
#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
//*/

#include <bits/stdc++.h>

// #include <atcoder/all>

using namespace std;
// using namespace atcoder;

// #define _GLIBCXX_DEBUG

#define DEBUG(x) cerr << #x << ": " << x << endl;
#define DEBUG_VEC(v)                                        \
    cerr << #v << ":";                                      \
    for (int iiiiiiii = 0; iiiiiiii < v.size(); iiiiiiii++) \
        cerr << " " << v[iiiiiiii];                         \
    cerr << endl;
#define DEBUG_MAT(v)                                \
    cerr << #v << endl;                             \
    for (int iv = 0; iv < v.size(); iv++) {         \
        for (int jv = 0; jv < v[iv].size(); jv++) { \
            cerr << v[iv][jv] << " ";               \
        }                                           \
        cerr << endl;                               \
    }
typedef long long ll;
// #define int ll

#define vi vector<int>
#define vl vector<ll>
#define vii vector<vector<int>>
#define vll vector<vector<ll>>
#define vs vector<string>
#define pii pair<int, int>
#define pis pair<int, string>
#define psi pair<string, int>
#define pll pair<ll, ll>
template <class S, class T>
pair<S, T> operator+(const pair<S, T> &s, const pair<S, T> &t) {
    return pair<S, T>(s.first + t.first, s.second + t.second);
}
template <class S, class T>
pair<S, T> operator-(const pair<S, T> &s, const pair<S, T> &t) { return pair<S, T>(s.first - t.first, s.second - t.second); }
template <class S, class T>
ostream &operator<<(ostream &os, pair<S, T> p) {
    os << "(" << p.first << ", " << p.second << ")";
    return os;
}
#define X first
#define Y second
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep1(i, n) for (int i = 1; i <= (int)(n); i++)
#define rrep(i, n) for (int i = (int)(n)-1; i >= 0; i--)
#define rrep1(i, n) for (int i = (int)(n); i > 0; i--)
#define REP(i, a, b) for (int i = a; i < b; i++)
#define in(x, a, b) (a <= x && x < b)
#define all(c) c.begin(), c.end()
void YES(bool t = true) {
    cout << (t ? "YES" : "NO") << endl;
}
void Yes(bool t = true) { cout << (t ? "Yes" : "No") << endl; }
void yes(bool t = true) { cout << (t ? "yes" : "no") << endl; }
void NO(bool t = true) { cout << (t ? "NO" : "YES") << endl; }
void No(bool t = true) { cout << (t ? "No" : "Yes") << endl; }
void no(bool t = true) { cout << (t ? "no" : "yes") << endl; }
template <class T>
bool chmax(T &a, const T &b) {
    if (a < b) {
        a = b;
        return 1;
    }
    return 0;
}
template <class T>
bool chmin(T &a, const T &b) {
    if (a > b) {
        a = b;
        return 1;
    }
    return 0;
}
#define UNIQUE(v) v.erase(std::unique(v.begin(), v.end()), v.end());
const ll inf = 1000000001;
const ll INF = (ll)1e18 + 1;
const long double pi = 3.1415926535897932384626433832795028841971L;
int popcount(ll t) { return __builtin_popcountll(t); }
// int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};
// int dx2[8] = { 1,1,0,-1,-1,-1,0,1 }, dy2[8] = { 0,1,1,1,0,-1,-1,-1 };
vi dx = {0, 0, -1, 1}, dy = {-1, 1, 0, 0};
vi dx2 = {1, 1, 0, -1, -1, -1, 0, 1}, dy2 = {0, 1, 1, 1, 0, -1, -1, -1};
struct Setup_io {
    Setup_io() {
        ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
        cout << fixed << setprecision(25);
    }
} setup_io;
const ll MOD = 1000000007;
// const ll MOD = 998244353;
// #define mp make_pair
//#define endl '\n'

struct dice {
    mt19937 mt;
    dice() : mt(chrono::steady_clock::now().time_since_epoch().count()) {}
    // [0, x)の一様乱数
    ll operator()(ll x) { return this->operator()(0, x); }
    // [x, y)の一様乱数
    ll operator()(ll x, ll y) {
        uniform_int_distribution<ll> dist(x, y - 1);
        return dist(mt);
    }
    vl operator()(int n, ll x, ll y) {
        vl res(n);
        for (int i = 0; i < n; i++)
            res[i] = this->operator()(x, y);
        return res;
    }
} rnd;

constexpr int n = 100, m = 8;
constexpr int alpha = 5;
vector<pii> ab(n);
vector<pii> cd(m);

void input() {
    int nn, mm;
    cin >> nn >> mm;

    rep(i, n) {
        cin >> ab[i].first >> ab[i].second;
    }

    rep(i, m) {
        int y = i / 3;
        int x = i % 3;
        cd[i] = pii(250 * (y + 1), 250 * (x + 1));
    }
}

int calc_dist(pii xy1, pii xy2) {
    pll dxy = xy1 - xy2;
    return dxy.first * dxy.first + dxy.second * dxy.second;
}

int ori_hyou[n][n];
int hyou[n][n];
pii ori_inter[n][n];
pii inter[n][n];

void fill_hyou(vector<int> &jun) {
    rep(i, n) {
        rep(j, n) {
            ori_hyou[i][j] = hyou[i][j];
            ori_inter[i][j] = inter[i][j];
        }
    }

    rep(i, n) {
        REP(j, i, n) {
            hyou[i][j] = calc_dist(ab[i], ab[j]) * alpha * alpha;
            inter[i][j] = pii(-1, -1);

            rep(k, m) {
                if (chmin(hyou[i][j], (calc_dist(ab[i], cd[k]) + calc_dist(cd[k], ab[j])) * alpha)) {
                    inter[i][j] = pii(k, -1);
                }
            }

            rep(k1, m) {
                int temp = calc_dist(ab[i], cd[k1]) * alpha;
                if (temp >= hyou[i][j]) {
                    continue;
                }
                rep(k2, m) {
                    int add = calc_dist(cd[k1], cd[k2]) + calc_dist(cd[k2], ab[j]) * alpha;
                    if (chmin(hyou[i][j], temp + add)) {
                        inter[i][j] = pii(k1, k2);
                    }
                }
            }

            hyou[j][i] = hyou[i][j];
            inter[j][i] = inter[i][j];
            if (inter[j][i].second != -1) {
                swap(inter[j][i].first, inter[j][i].second);
            }
        }
    }
}

int calc_score(const vi &dist) {
    ll sum = 0;
    rep(i, n) sum += dist[i];

    return round(1e9 / (1000 + sqrt(sum)));
}

int two_opt(vector<int> &jun) {
    fill_hyou(jun);

    static vector<int> dist(n);
    rep(i, n) {
        int s = jun[i], t = jun[(i + 1) % n];
        dist[i] = hyou[s][t];
    }

    bool updated = true;
    while (updated) {
        updated = false;
        for (int i = 1; i < n; i++) {
            for (int j = i + 1; j < n; j++) {
                int sub = 0, add = 0;
                sub += hyou[jun[i - 1]][jun[i]];
                add += hyou[jun[i - 1]][jun[j]];

                sub += hyou[jun[j]][jun[(j + 1) % n]];
                add += hyou[jun[i]][jun[(j + 1) % n]];

                if (sub > add) {
                    reverse(jun.begin() + i, jun.begin() + j + 1);
                    reverse(dist.begin() + i, dist.begin() + j);

                    dist[i - 1] = hyou[jun[i - 1]][jun[i]];
                    dist[j] = hyou[jun[j]][jun[(j + 1) % n]];

                    updated = true;
                }
            }
        }
    }

    return calc_score(dist);
}

int double_bridge(vector<int> &jun) {
    static vi erase_idx;
    while (true) {
        erase_idx.clear();
        rep(i, 4) {
            erase_idx.push_back(rnd(n));
        }
        sort(all(erase_idx));
        UNIQUE(erase_idx);

        if (erase_idx.size() == 4) {
            break;
        }
    }

    static vi new_jun;
    new_jun.clear();
    rep(i, erase_idx[0] + 1) {
        new_jun.emplace_back(i);
    }

    REP(i, erase_idx[2] + 1, erase_idx[3] + 1) {
        new_jun.emplace_back(i);
    }

    REP(i, erase_idx[1] + 1, erase_idx[2] + 1) {
        new_jun.emplace_back(i);
    }

    REP(i, erase_idx[0] + 1, erase_idx[1] + 1) {
        new_jun.emplace_back(i);
    }

    REP(i, erase_idx[3] + 1, n) {
        new_jun.emplace_back(i);
    }

    swap(jun, new_jun);

    return two_opt(jun);
}

void output(vector<int> &jun) {
    rep(i, m) {
        cout << cd[i].first << " " << cd[i].second << endl;
    }

    vector<pii> ans;
    ans.emplace_back(1, 0);
    rep(i, n) {
        int s = jun[i], t = jun[(i + 1) % n];

        pii keiyu = inter[s][t];
        if (keiyu.first != -1) {
            ans.emplace_back(2, keiyu.first);
        }
        if (keiyu.second != -1) {
            ans.emplace_back(2, keiyu.second);
        }

        ans.emplace_back(1, t);
    }

    cout << ans.size() << endl;
    for (auto [t, u] : ans) {
        cout << t << " " << u + 1 << endl;
    }
}

signed main() {
    clock_t start_c = clock();

    input();

    vector<int> jun(n);
    rep(i, n) {
        jun[i] = i;
    }

    int score = two_opt(jun);
    int best_score = score;
    vi best_jun = jun;
    vector<pii> best_cd = cd;

    rep(try_num, inf) {
        if (try_num % 256 == 0) {
            double sec = (double)(clock() - start_c) / CLOCKS_PER_SEC;
            if (sec > 0.9) {
                DEBUG(sec);
                DEBUG(try_num);
                break;
            }
        }

        if (try_num % 64 == 0) {
            DEBUG(score);
            score = double_bridge(jun);
            DEBUG(score);
            continue;
        }
        int idx = rnd(m);

        pii ori_cd = cd[idx];

        cd[idx].first += rnd(-30, 30);
        cd[idx].second += rnd(-30, 30);

        cd[idx].first = min(max(cd[idx].first, 0), 1000);
        cd[idx].second = min(max(cd[idx].second, 0), 1000);

        static vi ori_jun;
        ori_jun = jun;
        int new_score = two_opt(jun);

        if (new_score < score) {
            cd[idx] = ori_cd;
            swap(jun, ori_jun);

            rep(i, n) {
                rep(j, n) {
                    hyou[i][j] = ori_hyou[i][j];
                    inter[i][j] = ori_inter[i][j];
                }
            }
        } else {
            score = new_score;

            if (score > best_score) {
                best_score = score;
                best_jun = jun;
                best_cd = cd;
            }
        }
    }

    cd = best_cd;
    jun = best_jun;
    DEBUG(score);
    DEBUG(best_score);
    DEBUG(two_opt(jun));
    output(jun);
}

yukicoder

結果

テストケース

ソースコード