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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#881290#9810. Obliviate, Then ReincarnateUESTC_NLNSWA 291ms73216kbC++203.0kb2025-02-04 14:43:482025-02-04 14:43:48

Judging History

This is the latest submission verdict.

  • [2025-02-04 14:43:48]
  • Judged
  • Verdict: WA
  • Time: 291ms
  • Memory: 73216kb
  • [2025-02-04 14:43:48]
  • Submitted

answer

#include <algorithm>
#include <cassert>
#include <iostream>
#include <queue>
#include <vector>
#define int long long
using namespace std;
using pii = pair<int, int>;
using ll = long long;
struct solver {
    int n, m, q;
    vector<int> dfn, low, stk, id;
    vector<vector<pii>> g;
    vector<vector<int>> ig;
    vector<int> bl;
    vector<int> tag;
    vector<int> vis;
    vector<ll> dis;
    int cur = 1, cnt = 1;

    solver(int n) : n(n), dis(n + 1), tag(n + 1), ig(n + 1),
                    dfn(n + 1), g(n + 1), bl(n + 1),
                    low(n + 1), stk(), id(n + 1, -1), vis(n + 1) {}

    void tarjan(int u) {
        dfn[u] = low[u] = ++cur;
        stk.push_back(u);
        for (auto [v, w] : g[u]) {
            if (dfn[v] == 0)
                tarjan(v), low[u] = min(low[u], low[v]);
            else if (id[v] == -1)
                low[u] = min(low[u], low[v]);
        }
        if (dfn[u] == low[u]) {
            int v;
            do {
                v = stk.back();
                id[v] = cnt;
                stk.pop_back();
            } while (v != u);
            cnt++;
        }
    }

    int check(int u) {
        assert(id[u] != -1);
        for (const auto [v, w] : g[u]) {
            assert(w);
            if (id[v] != id[u]) continue;
            ll nd = dis[u] + w;
            if (!vis[v]) {
                dis[v] = nd, vis[v] = 1;
                if (check(v)) return tag[u] = 1;
            } else {
                if (nd != dis[v]) {
                    return tag[v] = 1;
                }
            }
        }
        return 0;
    }

    void fan() {
        queue<int> q;
        for (int i = 0; i < n; ++i)
            if (tag[i]) q.push(i);
        while (q.size()) {
            int u = q.front();
            q.pop();
            for (const auto v : ig[u]) {
                if (!tag[v]) tag[v] |= 1, q.push(v);
            }
        }
    }

    int norm(ll x) {
        return (x % n + n) % n;
    }

    void solve() {
        cin >> m >> q;
        for (int i = 0; i < m; ++i) {
            int x, w, y;
            cin >> x >> w;
            y = norm(x + w),
            x = norm(x);
            if (x == y) {
                if (w) tag[x] = 1;
            } else {
                g[x].push_back({y, w});
                ig[y].push_back(x);
            }
        }
        for (int i = 0; i < n; ++i) {
            if (id[i] == -1) {
                tarjan(i);
                vis[i] = 1;
                tag[i] |= check(i);
            }
        }
        fan();
        for (int i = 0; i < q; ++i) {
            int u;
            cin >> u;
            u = norm(u);
            cout << (tag[u] ? "Yes" : "No") << '\n';
        }
    }
};
signed main() {
    cin.tie(0), cout.tie(0), ios::sync_with_stdio(0);
    int n;
    cin >> n;
    solver s(n);
    s.solve();
}
/*
3 3 3
1 1
2 -2
3 4
1
2
3

3 3 3
1 3
1 1
2 -1
1 2 3

*/

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3712kb

input:

3 2 3
1 1
-1 3
1
2
3

output:

Yes
Yes
No

result:

ok 3 tokens

Test #2:

score: 0
Accepted
time: 0ms
memory: 3584kb

input:

3 2 3
1 1
-1 0
1
2
3

output:

No
No
No

result:

ok 3 tokens

Test #3:

score: 0
Accepted
time: 1ms
memory: 3712kb

input:

1 1 1
0 1000000000
-1000000000

output:

Yes

result:

ok "Yes"

Test #4:

score: 0
Accepted
time: 0ms
memory: 3584kb

input:

3 2 3
0 1000000000
1 -1000000000
-1000000000
0
-1000000000

output:

No
No
No

result:

ok 3 tokens

Test #5:

score: 0
Accepted
time: 185ms
memory: 31528kb

input:

50134 500000 500000
-154428638 -283522863
-186373509 -327130969
154999046 46750274
-933523447 349415487
-437683609 140099255
864996699 -262318199
811293034 -264299324
120273173 52410685
874944410 -52048424
445049930 -803690605
-138111276 -104634331
720288580 126597671
471164416 -348777147
-356502322...

output:

No
No
No
No
No
No
No
No
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No
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No
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No
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No
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No
No
No
No
No
No
No
...

result:

ok 500000 tokens

Test #6:

score: 0
Accepted
time: 207ms
memory: 40144kb

input:

100848 500000 500000
720352587 361776806
231853504 -933882325
960971230 -83519300
-152772415 -631132247
842871215 -666621297
857194330 -754943024
-698506963 -705416545
-3551931 -927937446
628710320 -942247987
674921043 847145884
-325629529 475694308
-339363446 686789318
236702996 654762989
420412365...

output:

Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
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Yes
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Yes
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Yes
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Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Y...

result:

ok 500000 tokens

Test #7:

score: 0
Accepted
time: 232ms
memory: 48668kb

input:

150017 500000 500000
-421117558 -111455068
-339650079 -834968786
-41718919 419434475
-574669254 477810078
-208090630 898829660
960273942 388265109
-125813433 327374640
360078728 -43670454
325384591 -821490639
180403987 -234797747
-66837706 246624381
691417200 -488557843
-12157264 809720468
-27690539...

output:

No
No
No
No
No
No
No
No
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No
No
No
No
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No
No
No
...

result:

ok 500000 tokens

Test #8:

score: 0
Accepted
time: 245ms
memory: 54160kb

input:

200806 500000 500000
-258823842 -746938452
767141873 239212613
-636327282 608642297
32878678 -599637555
-886750171 266284414
-305571379 -530753894
-479699957 -314474638
-314368519 891752869
-532306854 949604876
-786780332 924096014
881624655 -427208447
-828777932 982410017
-993666003 -964783795
4739...

output:

Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes...

result:

ok 500000 tokens

Test #9:

score: 0
Accepted
time: 262ms
memory: 58860kb

input:

250967 500000 500000
-259603037 -147096086
-522981205 -196517864
-381078674 -71123846
-855834769 247956205
141305563 -185585163
733025073 -330336665
-229023675 23759681
74736395 20184402
-670373808 -63240239
-334376006 -287990431
-465875753 583301785
964517056 1580583
-855645538 -487116442
-65247474...

output:

No
No
No
No
No
No
No
No
No
No
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No
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No
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No
No
No
No
No
...

result:

ok 500000 tokens

Test #10:

score: 0
Accepted
time: 262ms
memory: 62992kb

input:

300375 500000 500000
793181826 -619804723
-986427452 134261865
437562931 -794737754
-521408178 -508399450
606976759 277928484
-519111960 -227118711
153586118 -586261112
-508917435 -466941695
249860836 -422755184
-126335863 519019663
645935801 -107887022
-924300803 48366918
-355121282 -13333421
-1403...

output:

No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
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No
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No
No
No
No
No
No
No
...

result:

ok 500000 tokens

Test #11:

score: 0
Accepted
time: 256ms
memory: 64832kb

input:

350925 500000 500000
-505116063 -14955865
116307759 490825592
484543615 734519563
-445218662 -80035005
-85982781 420310805
-592881015 849216294
406362727 -484878521
-718889987 282061741
865119022 -903485039
240534334 517849261
-278659735 202074249
788989155 291446892
683706893 -217476533
-23842796 -...

output:

No
No
No
No
No
No
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No
No
...

result:

ok 500000 tokens

Test #12:

score: 0
Accepted
time: 291ms
memory: 68784kb

input:

400332 500000 500000
210979212 921953317
537984085 413101400
-310977739 691376942
-529333435 -633585426
-702242668 -43566580
839211888 171095937
-900909292 -542358581
-472744611 688276055
-92863103 -344038836
433433147 -877216111
131846069 535061672
120212750 -64810598
-157310367 -49897435
-66055325...

output:

No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
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No
No
No
No
No
No
No
No
No
No
No
No
No
...

result:

ok 500000 tokens

Test #13:

score: -100
Wrong Answer
time: 268ms
memory: 73216kb

input:

450502 500000 500000
934366003 713833231
-540537783 -772635744
-870362457 961906861
-315213829 895720681
-995660268 362545063
604723842 -591393639
69650285 76559281
178342063 -488026178
290327421 993186557
897378017 -354451014
503855556 -51363291
607948528 -686514463
-250166052 850204811
732450917 -...

output:

No
No
No
No
No
No
No
No
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No
...

result:

wrong answer 5th words differ - expected: 'Yes', found: 'No'