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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#487478#8793. Toiletsucup-team4435#WA 1ms3680kbC++207.0kb2024-07-22 22:25:362024-07-22 22:25:36

Judging History

你现在查看的是最新测评结果

  • [2024-07-22 22:25:36]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:3680kb
  • [2024-07-22 22:25:36]
  • 提交

answer

#include "bits/stdc++.h"

#define rep(i, n) for (int i = 0; i < (n); ++i)
#define rep1(i, n) for (int i = 1; i < (n); ++i)
#define rep1n(i, n) for (int i = 1; i <= (n); ++i)
#define repr(i, n) for (int i = (n) - 1; i >= 0; --i)
#define pb push_back
#define eb emplace_back
#define all(a) (a).begin(), (a).end()
#define rall(a) (a).rbegin(), (a).rend()
#define each(x, a) for (auto &x : a)
#define ar array
#define vec vector
#define range(i, n) rep(i, n)

using namespace std;

using ll = long long;
using ull = unsigned long long;
using ld = double;
using str = string;
using pi = pair<int, int>;
using pl = pair<ll, ll>;

using vi = vector<int>;
using vl = vector<ll>;
using vpl = vector<pl>;
using vpi = vector<pair<int, int>>;
using vvi = vector<vi>;

int Bit(int mask, int b) { return (mask >> b) & 1; }

template<class T>
bool ckmin(T &a, const T &b) {
    if (b < a) {
        a = b;
        return true;
    }
    return false;
}

template<class T>
bool ckmax(T &a, const T &b) {
    if (b > a) {
        a = b;
        return true;
    }
    return false;
}

const int INFi = 2e9;
const int N = 5e5 + 5;
const ll INF = 2e18;

void solve() {
    int n, m;
    ll L;
    cin >> n >> m >> L;
    vl x(m);
    rep(i, m) cin >> x[i];

    vector<ll> t(n), p(n), s(n), d(n), v(n);
    rep(i, n) {
        char dirs;
        cin >> t[i] >> p[i] >> dirs >> d[i];
        if (dirs == '+') {
            v[i] = p[i] - t[i];
            s[i] = 1;
        } else {
            v[i] = p[i] + t[i];
            s[i] = -1;
        }
    }

    rep(i, n) {
        v[i] %= L;
        if (v[i] < 0) v[i] += L;
    }


    set<pair<ll, int>> right_q, left_q;
    set<pair<ll, int>> alive;

    rep(i, m) {
        alive.insert({x[i], i});
    }

    vector<pair<ll, int>> bestL(m, {INF, -1}), bestR(m, {INF, -1});

    set<ar<ll, 3>> events;
    ll T = 0;

    auto GetPrev = [&](int i) {
        auto it = alive.find({x[i], i});
        if (it == alive.begin()) it = alive.end();
        return prev(it)->second;
    };

    auto GetNext = [&](int i) {
        auto it = next(alive.find({x[i], i}));
        if (it == alive.end()) it = alive.begin();
        return it->second;
    };

    auto GetPrevRQ = [&](ll x) {
        auto it = right_q.lower_bound({x, -1});
        if (it == right_q.begin()) it = right_q.end();
        return *prev(it);
    };

    auto GetNextLQ = [&](ll x) {
        auto it = left_q.lower_bound({x + 1, -1});
        if (it == left_q.end()) it = left_q.begin();
        return *it;
    };

    auto UpdateL = [&](int i) {
        // left from i toilet
        if (bestL[i].second != -1) {
            events.erase({bestL[i].first, bestL[i].second, i});
        }
        int j = GetPrev(i);
        ll rq = x[i] - T;
        ll lq = x[j] - T;
        lq %= L;
        rq %= L;
        if (lq < 0) lq += L;
        if (rq < 0) rq += L;
        ll len = rq - lq;
        if (len <= 0) len += L;
        // [lq, rq]
        bestL[i] = {INF, -1};
        if (!right_q.empty()) {
            auto [qv, qi] = GetPrevRQ(rq + 1);
            ll le = (rq - qv + L) % L;
            if (le < len) {
                bestL[i] = {T + le, -qi};
            }
        }
        if (bestL[i].second != -1) {
            events.insert({bestL[i].first, bestL[i].second, i});
        }
    };

    auto UpdateR = [&](int i) {
        // right from i toilet
        if (bestR[i].second != -1) {
            events.erase({bestR[i].first, bestR[i].second, i});
        }
        int j = GetNext(i);
        ll lq = x[i] + T;
        ll rq = x[j] + T;
        lq %= L;
        rq %= L;
        if (lq < 0) lq += L;
        if (rq < 0) rq += L;
        ll len = rq - lq;
        if (len <= 0) len += L;
        // [lq, rq]
        bestR[i] = {INF, -1};
        if (!left_q.empty()) {
            auto [qv, qi] = GetNextLQ(lq - 1);
            ll le = (qv - lq + L) % L;
            if (le < len) {
                bestR[i] = {T + le, qi};
            }
        }
        if (bestR[i].second != -1) {
            events.insert({bestR[i].first, bestR[i].second, i});
        }
    };

    auto AddPeople = [&](int i) {
        if (s[i] == 1) {
            // to right
            right_q.insert({v[i], -i});
//            right_q.insert({p[i] + L, i});
            if (!alive.empty()) {
                auto it = alive.lower_bound({p[i], -1});
                if (it == alive.end()) it = alive.begin();
                UpdateL(it->second);
            }
        } else {
            left_q.insert({v[i], i});
//            left_q.insert({p[i] + L, i});
            if (!alive.empty()) {
                auto it = alive.lower_bound({p[i] + 1, -1});
                if (it == alive.begin()) it = alive.end();
                it--;
                UpdateR(it->second);
            }
        }
    };

    auto AddToilet = [&] (int i) {
        alive.insert({x[i], i});
        UpdateL(i);
        UpdateR(i);
        if (alive.size() != 1) {
            UpdateL(GetNext(i));
            UpdateR(GetPrev(i));
        }
    };

    vector<pair<ll, ll>> ans(n);

    auto DelToilet = [&] (int i, ll t3) {
        int lq = -1, rq = -1;
        if (alive.size() != 1) {
            lq = GetPrev(i);
            rq = GetNext(i);
        }
        alive.erase({x[i], i});
        if (bestR[i].second != -1) {
            events.erase({bestR[i].first, bestR[i].second, i});
            bestR[i] = {INF, -1};
        }
        if (bestL[i].second != -1) {
            events.erase({bestL[i].first, bestL[i].second, i});
            bestL[i] = {INF, -1};
        }
        if (lq != -1) {
            UpdateR(lq);
            UpdateL(rq);
        }
        events.insert({t3, -1, i});
    };

    auto Do = [&](ll t2) {
        assert(T <= t2);
        while (T < t2) {
            if (events.empty()) {
                T = t2;
                break;
            }
            auto [t1, who, whe] = *(events.begin());
            if (t1 >= t2) {
                T = t2;
                break;
            }
//            cerr << t1 << ' ' << who << ' ' << whe << endl;
            assert(T <= t1);

            if (who == -1) {
                T = t1;
                events.erase(events.begin());
                AddToilet(whe);
                continue;
            }

            if (s[who] == 1) {
                right_q.erase({v[who], -who});
            } else {
                left_q.erase({v[who], who});
            }

            ans[who] = {x[whe], t1};
            DelToilet(whe, t1 + d[who]);

            T = t1;
        }
    };

    rep(i, n) {
        Do(t[i]);
        AddPeople(i);
    }
    Do(INF);

    rep(i, n) {
        cout << ans[i].first << ' ' << ans[i].second << '\n';
    }
}

signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cout << setprecision(15) << fixed;
    int t = 1;
//    cin >> t;
    rep(_, t) {
        solve();
    }

    return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3652kb

input:

5 3 45
10 20 30
0 0 + 200
2 5 + 10
20 40 - 100
21 16 + 10
50 0 + 22

output:

20 20
10 7
30 30
10 60
10 105

result:

ok 10 numbers

Test #2:

score: 0
Accepted
time: 0ms
memory: 3652kb

input:

1 1 1
0
0 0 - 1

output:

0 0

result:

ok 2 number(s): "0 0"

Test #3:

score: 0
Accepted
time: 0ms
memory: 3580kb

input:

5 3 33
3 24 23
12 24 - 9
16 28 - 1
17 27 - 9
19 26 - 5
32 22 - 2

output:

24 12
23 21
3 41
24 21
3 51

result:

ok 10 numbers

Test #4:

score: 0
Accepted
time: 0ms
memory: 3532kb

input:

4 5 6
1 3 4 2 0
2 1 + 2
7 3 + 6
9 0 + 9
10 1 - 6

output:

1 2
3 7
0 9
1 10

result:

ok 8 numbers

Test #5:

score: -100
Wrong Answer
time: 1ms
memory: 3680kb

input:

736 30 100500
99382 85511 67593 53450 55531 9959 37170 57546 52666 62342 50707 71285 65933 19874 2092 100255 23965 83091 45652 64171 100128 19518 21445 96069 79781 52642 37943 95321 97569 69154
0 44619 + 7052
2 72499 + 29247
3 53785 - 35614
5 81887 + 64475
7 8561 + 31641
8 95471 - 22654
9 61040 - 44...

output:

53450 310331
95321 22824
53450 338
67593 186711
99382 593328
95321 158
83091 580958
62342 71243
95321 759206
83091 183
2092 375130
99382 756951
100128 641870
64171 5285
50707 288492
96069 846290
2092 284
100255 605687
53450 615009
52642 683384
69154 5302
83091 155808
57546 351069
2092 231938
79781 7...

result:

wrong answer 9th numbers differ - expected: '23965', found: '99382'