結果

問題 No.2718 Best Consonance
ユーザー tokusakuraitokusakurai
提出日時 2024-04-05 22:21:40
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 519 ms / 4,000 ms
コード長 4,951 bytes
コンパイル時間 2,939 ms
コンパイル使用メモリ 212,872 KB
実行使用メモリ 41,080 KB
最終ジャッジ日時 2024-04-10 10:52:07
合計ジャッジ時間 19,522 ms
ジャッジサーバーID
(参考情報)
judge2 / judge5
このコードへのチャレンジ
(要ログイン)

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 240 ms
31,584 KB
testcase_01 AC 251 ms
31,516 KB
testcase_02 AC 251 ms
31,576 KB
testcase_03 AC 256 ms
31,580 KB
testcase_04 AC 257 ms
31,576 KB
testcase_05 AC 255 ms
31,680 KB
testcase_06 AC 249 ms
31,512 KB
testcase_07 AC 251 ms
31,652 KB
testcase_08 AC 255 ms
31,680 KB
testcase_09 AC 258 ms
31,716 KB
testcase_10 AC 248 ms
31,700 KB
testcase_11 AC 257 ms
31,696 KB
testcase_12 AC 253 ms
31,696 KB
testcase_13 AC 251 ms
31,696 KB
testcase_14 AC 472 ms
37,280 KB
testcase_15 AC 414 ms
37,936 KB
testcase_16 AC 432 ms
36,716 KB
testcase_17 AC 383 ms
35,280 KB
testcase_18 AC 441 ms
38,160 KB
testcase_19 AC 400 ms
37,728 KB
testcase_20 AC 467 ms
37,164 KB
testcase_21 AC 454 ms
38,180 KB
testcase_22 AC 466 ms
37,444 KB
testcase_23 AC 381 ms
35,044 KB
testcase_24 AC 513 ms
39,804 KB
testcase_25 AC 511 ms
40,448 KB
testcase_26 AC 514 ms
40,056 KB
testcase_27 AC 509 ms
39,880 KB
testcase_28 AC 518 ms
40,444 KB
testcase_29 AC 502 ms
39,716 KB
testcase_30 AC 502 ms
40,444 KB
testcase_31 AC 508 ms
40,700 KB
testcase_32 AC 519 ms
39,860 KB
testcase_33 AC 512 ms
41,080 KB
testcase_34 AC 247 ms
31,624 KB
testcase_35 AC 248 ms
31,672 KB
testcase_36 AC 311 ms
32,592 KB
testcase_37 AC 241 ms
31,508 KB
testcase_38 AC 295 ms
32,592 KB
testcase_39 AC 249 ms
31,596 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() {
    int N;
    cin >> N;

    const int MAX = 200000;
    vector<vector<int>> ds(MAX + 1);
    rep2(i, 1, MAX + 1) {
        for (int j = 0; j <= MAX; j += i) ds[j].eb(i);
    }

    vector<vector<int>> bs(MAX + 1);
    rep(i, N) {
        int a, b;
        cin >> a >> b;
        bs[a].eb(b);
    }

    vector<pll> p;

    rep(i, MAX + 1) {
        sort(rall(bs[i]));
        rep(j, min(2, sz(bs[i]))) p.eb(i, bs[i][j]);
    }

    sort(all(p), [&](pll p1, pll p2) {
        return p1.first * p1.second > p2.first * p2.second; //
    });

    vector<ll> mi(MAX + 1, INF);
    ll ans = -INF;

    for (auto [a, b] : p) {
        ll c = a * b;
        each(g, ds[a]) {
            ll x = mi[g];
            if (x != INF) {
                ll l = (a * x) / g;
                chmax(ans, floor(c, l));
            }
        }
        each(g, ds[a]) chmin(mi[g], a);
    }

    cout << ans << '\n';
}

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