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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#114747#6192. Interval Problemstd_abs#WA 283ms466092kbC++142.8kb2023-06-23 14:12:102023-06-23 14:12:12

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-06-23 14:12:12]
  • 评测
  • 测评结果:WA
  • 用时:283ms
  • 内存:466092kb
  • [2023-06-23 14:12:10]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define pb push_back
#define pii pair<int, int>
#define all(a) a.begin(), a.end()
#define sz(a) ((int)a.size())
const int mod = 998244353, N = 400005;
typedef pair<int, int> pi;

int c[N];

struct seg {
    int l, r, cnt, lz;
    ll v;
    seg *ch[2]{};
    seg(int _l, int _r) : l(_l), r(_r), lz(0), v(0) {
        if (l < r - 1)
            ch[0] = new seg(l, l + r >> 1), ch[1] = new seg(l + r >> 1, r), cnt = ch[0]->cnt + ch[1]->cnt;
        else
            cnt = c[l];
    }
    seg(seg *oth) : l(oth->l), r(oth->r), cnt(oth->cnt), lz(oth->lz), v(oth->v), ch{oth->ch[0], oth->ch[1]} {}
    void push() {
        if (lz)
            ch[0] = ch[0]->modify(l, r, lz), ch[1] = ch[1]->modify(l, r, lz), lz = 0;
    }
    void pull() {
        v = ch[0]->v + ch[1]->v;
    }
    seg* modify(int _l, int _r, int d) {
        seg* tmp = new seg(this);
        if (_l <= l && r <= _r) {
            tmp->lz += d;
            tmp->v += 1ll * d * cnt;
            return tmp;
        }
        tmp->push();
        if (_l < l + r >> 1)
            tmp->ch[0] = tmp->ch[0]->modify(_l, _r, d);
        if (l + r >> 1 < _r)
            tmp->ch[1] = tmp->ch[1]->modify(_l, _r, d);
        tmp->pull();
        return tmp;
    }
};

int main() {
	ios::sync_with_stdio(false), cin.tie(0);
    int n;
    cin >> n;
    pi a[n];
    int id[2 * n];
    ll ans[n];
    for (int i = 0; i < n; ++i) {
        cin >> a[i].first >> a[i].second;
        id[--a[i].first] = id[--a[i].second] = i;
        ans[i] = n - 1;
    }
    for (int i = 0; i < 2 * n; ++i)
        c[i] = i == a[id[i]].first ? 1 : 0;
    queue<int> q;
    seg *rt = new seg(0, 2 * n);
    vector<seg*> rts(n, nullptr);
    for (int i = 2 * n - 1; ~i; --i) {
        int x = id[i];
        if (i == a[x].second) {
            while (!q.empty() && a[q.front()].first > i)
                q.pop();
            if (q.empty())
                rts[x] = rt;
            else {
                rts[x] = rts[q.front()]->modify(i + 1, 2 * n, 1);
                ans[x] += rts[x]->v;
            }
            q.push(x);
        }
    }
    while (!q.empty())
        q.pop();
    rts.assign(n, nullptr);
    for (int i = 0; i < 2 * n; ++i)
        c[i] = i == a[id[i]].second ? 1 : 0;
    rt = new seg(0, 2 * n);
    for (int i = 0; i < 2 * n; ++i) {
        int x = id[i];
        if (i == a[x].first) {
            while (!q.empty() && a[q.front()].second < i)
                q.pop();
            if (q.empty())
                rts[x] = rt;
            else {
                rts[x] = rts[q.front()]->modify(0, i, 1);
                ans[x] += rts[x]->v;
            }
            q.push(x);
        }
    }
    for (int i = 0; i < n; ++i)
        cout << ans[i] << '\n';
}

Details

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Test #1:

score: 100
Accepted
time: 1ms
memory: 3444kb

input:

5
2 3
6 7
1 9
5 10
4 8

output:

7
5
4
5
5

result:

ok 5 number(s): "7 5 4 5 5"

Test #2:

score: -100
Wrong Answer
time: 283ms
memory: 466092kb

input:

200000
342504 342505
248314 248317
259328 259334
234817 234821
225726 225732
371424 371425
260562 260565
34752 34753
132098 132100
262130 262134
7254 7255
228491 228492
43488 43492
188408 188410
11691 11692
350334 350335
327350 327352
360684 360685
182051 182052
72131 72135
194666 194668
61303 61313...

output:

428743
772456
588982
365175
399994
1328528
399996
399997
266047
606777
792738
199999
756491
599989
594148
575159
399996
439302
599987
363931
399996
461289
199999
241335
199999
399996
692065
1023403
419356
527177
212083
199999
697333
529128
407465
226931
894155
412527
599993
599988
399997
483593
7136...

result:

wrong answer 1st numbers differ - expected: '12', found: '428743'