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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#516552#4401. PrizeJWRuixi0 0ms0kbC++202.9kb2024-08-12 18:36:242024-08-12 18:36:28

Judging History

你现在查看的是最新测评结果

  • [2024-08-12 18:36:28]
  • 评测
  • 测评结果:0
  • 用时:0ms
  • 内存:0kb
  • [2024-08-12 18:36:24]
  • 提交

answer

#ifdef LOCAL
#include "stdafx.h"
#else
#include <bits/stdc++.h>
#define IL inline
#define LL long long
#define eb emplace_back
#define L(i, j, k) for (int i = (j); i <= (k); ++i)
#define R(i, j, k) for (int i = (j); i >= (k); --i)
#define FIO(FILE) freopen(FILE".in", "r", stdin), freopen(FILE".out", "w", stdout)
using namespace std;

using vi = vector<int>;
#endif

constexpr int N = 1e6 + 9;
int n, K, Q, T;
vi S;

struct tree {
  int rt, hd[N], tot;

  struct {
    int v, nx;
  } e[N * 2];

  void add_edge (int u, int v) {
    e[++tot] = {v, hd[u]};
    hd[u] = tot;
  }

  int dfn[N], dfc, st[20][N];

  void dfs (int u, int f) {
    st[0][dfn[u] = ++dfc] = f;
    for (int i = hd[u], v; i; i = e[i].nx) {
      dfs(v = e[i].v, u);
    }
  }

  int C (int x, int y) {
    return dfn[x] < dfn[y] ? x : y;
  }

  void init () {
    L (i, 1, 19) {
      L (j, 1, n - (1 << i) + 1) {
        st[i][j] = C(st[i - 1][j], st[i - 1][j + (1 << (i - 1))]);
      }
    }
  }

  int lca (int x, int y) {
    if (x == y) {
      return x;
    }
    if ((x = dfn[x]) > (y = dfn[y])) {
      swap(x, y);
    }
    int i = __lg(y - x++);
    return C(st[i][x], st[i][y - (1 << i) + 1]);
  }

  void in () {
    L (x, 1, n) {
      int y;
      cin >> y;
      if (~y) {
        add_edge(y, x);
      } else {
        rt = x;
      }
    }
    dfs(rt, 0);
    init();
  }

  vector<pair<int, int>> g[N];
  int d[N];

  void add (int u, int v, int w) {
    g[u].eb(v, w);
    g[v].eb(u, -w);
  }

  void sol () {
    int R = S[0];
    L (i, 1, K - 1) {
      R = lca(R, S[i]);
    }
    memset(d, -1, (n + 1) << 2);
    queue<int> q;
    q.push(R);
    d[R] = 0;
    while (!q.empty()) {
      int u = q.front();
      q.pop();
      for (auto [v, w] : g[u]) {
        if (d[v] == -1) {
          d[v] = d[u] + w;
          q.push(v);
        }
      }
    }
  }

  int dis (int x, int y) {
    return d[x] + d[y] - 2 * d[lca(x, y)];
  }
} t[2];

int main () {
  ios::sync_with_stdio(0), cin.tie(0);
  cin >> n >> K >> Q >> T;
  L (i, 0, 1) {
    t[i].in();
  }
  L (i, 1, n) {
    if (t[0].dfn[i] <= K) {
      S.eb(i);
    }
  }
  L (i, 0, K - 1) {
    cout << S[i] << ' ';
  }
  cout << endl;
  sort(S.begin(), S.end(), [] (int x, int y) {
    return t[1].dfn[x] < t[1].dfn[y];
  });
  L (i, 1, K - 1) {
    cout << "? " << S[i - 1] << ' ' << S[i] << '\n';
  }
  cout << "!" << endl;
  L (i, 1, K - 1) {
    int l = t[0].lca(S[i - 1], S[i]);
    int d1, d2;
    cin >> d1 >> d2;
    t[0].add(l, S[i - 1], d1);
    t[0].add(l, S[i], d2);
    l = t[1].lca(S[i - 1], S[i]);
    cin >> d1 >> d2;
    t[1].add(l, S[i - 1], d1);
    t[1].add(l, S[i], d2);
  }
  t[0].sol();
  t[1].sol();
  while (T--) {
    int x, y;
    cin >> x >> y;
    cout << t[0].dis(x, y) << ' ' << t[1].dis(x, y) << '\n';
  }
  cout.flush();
}
// I love WHQ!

詳細信息

Subtask #1:

score: 0
Time Limit Exceeded

Test #1:

score: 0
Time Limit Exceeded

input:

500000 64682 64681 100000
46115
470589
209303
2979
473162
343535
79503
299539
404621
102085
237721
279170
392890
165201
441593
456314
218991
358478
86614
410800
159785
169761
95368
285837
297549
370283
378974
26449
444381
39320
149913
404523
144109
174828
263837
49847
468694
478535
152644
216598
301...

output:

10 12 22 35 36 38 46 51 57 72 87 92 96 101 112 129 130 132 180 186 206 208 209 217 219 224 228 229 244 245 247 251 255 256 285 294 310 314 319 344 346 351 355 365 368 376 378 383 388 391 406 412 413 414 425 426 427 440 443 448 449 459 461 463 466 474 480 485 498 506 507 515 520 543 544 554 566 578 5...

result:


Subtask #2:

score: 0
Time Limit Exceeded

Test #13:

score: 0
Time Limit Exceeded

input:

500000 88721 177440 100000
30974
23891
211201
125199
180489
387190
218020
498838
230147
307989
484136
257785
353027
304420
311738
169842
334090
486070
126212
328609
174959
368840
238722
418092
488389
226349
427271
457322
332454
12958
197530
264474
355717
482774
221286
282148
216441
266659
213750
628...

output:

16 22 25 34 38 54 55 56 61 65 67 78 81 101 117 119 120 121 123 124 130 134 149 155 163 169 170 177 189 196 204 205 214 232 234 239 265 269 273 281 282 289 311 318 335 338 339 341 354 358 377 380 383 389 403 414 427 435 437 438 448 451 455 459 468 469 475 479 485 495 496 506 508 511 521 543 544 551 5...

result:


Subtask #3:

score: 0
Time Limit Exceeded

Test #25:

score: 0
Time Limit Exceeded

input:

500000 200 199 40000
76296
130139
291501
292412
139543
433345
372726
451574
18315
465578
324564
477223
237354
81532
65170
465332
342130
9670
193303
193680
129668
149532
268907
89969
398275
356210
324593
433492
482232
466692
135343
433758
102545
287283
432859
351864
305769
489532
101532
450535
295762...

output:

1214 2143 3735 4030 7129 8253 11748 12225 17034 19060 20242 30813 32330 34833 45188 48206 50829 52835 55343 59162 60737 65783 68301 70140 70498 70917 71690 81733 81917 85913 88306 88328 88823 90620 92449 95551 96560 109196 112780 113741 116227 116954 120898 121346 124294 124622 125508 125537 128363 ...

result:


Subtask #4:

score: 0
Time Limit Exceeded

Test #37:

score: 0
Time Limit Exceeded

input:

1000000 1000 999 100000
678746
439069
32542
85937
936926
284219
461661
203235
533462
940676
230275
621140
780674
254931
562355
229273
201341
493976
358955
963527
880412
91220
474599
160086
698841
591551
718276
844558
39859
765917
34722
401724
219774
443004
682244
545401
968419
968020
354030
411187
1...

output:

2107 2333 3694 4616 5440 6866 6983 7525 9720 10062 10226 11086 11280 11649 12530 12977 15895 18501 18543 18720 18751 19029 19970 23318 23665 25440 27083 28832 29922 34062 36058 36066 36918 37375 37551 37681 37693 38230 42470 42868 42991 45539 46443 46606 47245 49131 49762 51122 51277 52728 53512 535...

result:


Subtask #5:

score: 0
Skipped

Dependency #4:

0%