oj.uz

Submission #999330

# Submission time Handle Problem Language Result Execution time Memory
999330 2024-06-15T10:07:38 Z 우민규(#10874) Fountain Parks (IOI21_parks) C++17
55 / 100
 495 ms 125864 KB 
#include "parks.h"

#include <bits/stdc++.h>
using namespace std;

int construct_roads(vector<int> x, vector<int> y) {
  int n = x.size();
  if (n == 1) {
    build({}, {}, {}, {});
    return 1;
  }
  map<pair<int, int>, int> pts;
  map<pair<int, int>, vector<int>> upd;
  for (int i = 0; i < n; ++i) pts[{y[i], x[i]}] = i;
  int components = n;
  vector<int> par(n);
  iota(par.begin(), par.end(), 0);
  function<int(int)> find = [&](int node) {
    return par[node] == node ? node : par[node] = find(par[node]);
  };
  auto join = [&](int u, int v) {
    u = find(u), v = find(v);
    if (u != v) {
      components -= 1;
      par[u] = v;
    }
  };
  vector<int> u, v, a, b;
  for (auto [k, i] : pts) {
    auto [y, x] = k;
    // construct vertical edge
    if (pts.count({y - 2, x})) {
      int cur = u.size();
      u.push_back(pts[{y - 2, x}]);
      v.push_back(i);
      a.push_back(-69746974);
      b.push_back(-69746974);
      join(i, pts[{y - 2, x}]);
      upd[{y - 1, x - 1}].push_back(cur);
      upd[{y - 1, x + 1}].push_back(cur);
    }
    if (pts.count({y, x - 2})) {
      int cur = v.size();
      u.push_back(pts[{y, x - 2}]);
      v.push_back(i);
      a.push_back(-69746974);
      b.push_back(-69746974);
      join(i, pts[{y, x - 2}]);
      upd[{y - 1, x - 1}].push_back(cur);
      upd[{y + 1, x - 1}].push_back(cur);
    }
  }
  if (components > 1) {
    return 0;
  }
  function<void(int)> upd_trav;
  // select at point p
  function<void(int, int, int, int, int)> sel_upd = [&](int x, int y, int xp,
                                                        int yp, int v) {
    vector<int> tmp;
    upd[{y, x}].swap(tmp);
    a[v] = x;
    b[v] = y;
    // if (v == 0) {
    //   int t = 3;
    // }
    // cout << "SET " << v << ": " << x << " " << y << ", " << xp << " " << yp
    //      << "\n";
    // for (auto t : upd[{yp, xp}]) {
    //   cout << t << ", ";
    // }
    // cout << "\n";
    auto it = std::find(upd[{yp, xp}].begin(), upd[{yp, xp}].end(), v);
    if (it != upd[{yp, xp}].end()) upd[{yp, xp}].erase(it);
    // for (auto t : upd[{yp, xp}]) {
    //   cout << t << ", ";
    // }
    // cout << "\n";
    for (auto p : tmp)
      if (p != v) upd_trav(p);
    if (!upd[{yp, xp}].empty()) {
      tmp.clear();
      upd[{yp, xp}].swap(tmp);
      for (auto p : tmp) upd_trav(p);
    }
  };
  upd_trav = [&](int p) {
    int cx = (x[u[p]] + x[v[p]]) / 2;
    int cy = (y[u[p]] + y[v[p]]) / 2;
    if (x[u[p]] != x[v[p]]) {
      // {x, y+1}, {x, y-1}
      if (std::find(upd[{cy + 1, cx}].begin(), upd[{cy + 1, cx}].end(), p) !=
          upd[{cy + 1, cx}].end()) {
        sel_upd(cx, cy + 1, cx, cy - 1, p);
      } else {
        sel_upd(cx, cy - 1, cx, cy + 1, p);
      }
    } else {
      if (std::find(upd[{cy, cx - 1}].begin(), upd[{cy, cx - 1}].end(), p) !=
          upd[{cy, cx - 1}].end()) {
        sel_upd(cx - 1, cy, cx + 1, cy, p);
      } else {
        sel_upd(cx + 1, cy, cx - 1, cy, p);
      }
    }
  };
  for (int i = 0; i < u.size(); ++i) {
    if (a[i] == -69746974 && b[i] == -69746974) {
      upd_trav(i);
    }
  }
  build(u, v, a, b);
  return 1;
}

#ifndef EVAL
#include "grader.cpp"
#endif

Compilation message

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:107:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  107 |   for (int i = 0; i < u.size(); ++i) {
      |                   ~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 504 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 219 ms 35208 KB Output is correct
10 Correct 19 ms 3928 KB Output is correct
11 Correct 98 ms 19108 KB Output is correct
12 Correct 22 ms 5724 KB Output is correct
13 Correct 43 ms 14340 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 2 ms 860 KB Output is correct
16 Correct 219 ms 35128 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 504 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 219 ms 35208 KB Output is correct
10 Correct 19 ms 3928 KB Output is correct
11 Correct 98 ms 19108 KB Output is correct
12 Correct 22 ms 5724 KB Output is correct
13 Correct 43 ms 14340 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 2 ms 860 KB Output is correct
16 Correct 219 ms 35128 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 495 ms 101176 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 3 ms 1000 KB Output is correct
26 Correct 3 ms 1116 KB Output is correct
27 Correct 4 ms 1348 KB Output is correct
28 Correct 183 ms 40808 KB Output is correct
29 Correct 273 ms 60828 KB Output is correct
30 Correct 373 ms 82600 KB Output is correct
31 Correct 488 ms 103032 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 436 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 2 ms 856 KB Output is correct
44 Correct 3 ms 1116 KB Output is correct
45 Correct 191 ms 29112 KB Output is correct
46 Correct 311 ms 42232 KB Output is correct
47 Correct 278 ms 42152 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 504 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 219 ms 35208 KB Output is correct
10 Correct 19 ms 3928 KB Output is correct
11 Correct 98 ms 19108 KB Output is correct
12 Correct 22 ms 5724 KB Output is correct
13 Correct 43 ms 14340 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 2 ms 860 KB Output is correct
16 Correct 219 ms 35128 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 495 ms 101176 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 3 ms 1000 KB Output is correct
26 Correct 3 ms 1116 KB Output is correct
27 Correct 4 ms 1348 KB Output is correct
28 Correct 183 ms 40808 KB Output is correct
29 Correct 273 ms 60828 KB Output is correct
30 Correct 373 ms 82600 KB Output is correct
31 Correct 488 ms 103032 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 436 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 2 ms 856 KB Output is correct
44 Correct 3 ms 1116 KB Output is correct
45 Correct 191 ms 29112 KB Output is correct
46 Correct 311 ms 42232 KB Output is correct
47 Correct 278 ms 42152 KB Output is correct
48 Correct 0 ms 344 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Incorrect 0 ms 436 KB Tree @(3, 3) appears more than once: for edges on positions 0 and 3
52 Halted 0 ms 0 KB -

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 504 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 219 ms 35208 KB Output is correct
10 Correct 19 ms 3928 KB Output is correct
11 Correct 98 ms 19108 KB Output is correct
12 Correct 22 ms 5724 KB Output is correct
13 Correct 43 ms 14340 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 2 ms 860 KB Output is correct
16 Correct 219 ms 35128 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 457 ms 123304 KB Output is correct
21 Correct 470 ms 85704 KB Output is correct
22 Correct 481 ms 87968 KB Output is correct
23 Correct 382 ms 61348 KB Output is correct
24 Correct 138 ms 18512 KB Output is correct
25 Correct 243 ms 65180 KB Output is correct
26 Correct 274 ms 65192 KB Output is correct
27 Correct 468 ms 71468 KB Output is correct
28 Correct 464 ms 71588 KB Output is correct
29 Correct 396 ms 71588 KB Output is correct
30 Correct 408 ms 71592 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 26 ms 4700 KB Output is correct
33 Correct 56 ms 9812 KB Output is correct
34 Correct 440 ms 125864 KB Output is correct
35 Correct 9 ms 2648 KB Output is correct
36 Correct 52 ms 12392 KB Output is correct
37 Correct 114 ms 24312 KB Output is correct
38 Correct 175 ms 22196 KB Output is correct
39 Correct 213 ms 30372 KB Output is correct
40 Correct 303 ms 38288 KB Output is correct
41 Correct 376 ms 46520 KB Output is correct
42 Correct 411 ms 54692 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 344 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 0 ms 344 KB Output is correct
54 Correct 2 ms 860 KB Output is correct
55 Correct 3 ms 1116 KB Output is correct
56 Correct 202 ms 29168 KB Output is correct
57 Correct 278 ms 42076 KB Output is correct
58 Correct 270 ms 42148 KB Output is correct
59 Correct 0 ms 344 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 1 ms 604 KB Output is correct
62 Correct 450 ms 71580 KB Output is correct
63 Correct 492 ms 71604 KB Output is correct
64 Correct 452 ms 71352 KB Output is correct
65 Correct 4 ms 1268 KB Output is correct
66 Correct 8 ms 2396 KB Output is correct
67 Correct 185 ms 28480 KB Output is correct
68 Correct 311 ms 42916 KB Output is correct
69 Correct 409 ms 56924 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 504 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 219 ms 35208 KB Output is correct
10 Correct 19 ms 3928 KB Output is correct
11 Correct 98 ms 19108 KB Output is correct
12 Correct 22 ms 5724 KB Output is correct
13 Correct 43 ms 14340 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 2 ms 860 KB Output is correct
16 Correct 219 ms 35128 KB Output is correct
17 Correct 460 ms 70020 KB Output is correct
18 Correct 483 ms 72180 KB Output is correct
19 Correct 456 ms 125592 KB Output is correct
20 Correct 448 ms 59048 KB Output is correct
21 Correct 368 ms 59560 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 58 ms 9360 KB Output is correct
24 Correct 20 ms 5464 KB Output is correct
25 Correct 82 ms 18384 KB Output is correct
26 Correct 143 ms 31144 KB Output is correct
27 Correct 222 ms 29844 KB Output is correct
28 Correct 283 ms 37288 KB Output is correct
29 Correct 371 ms 44712 KB Output is correct
30 Correct 421 ms 51836 KB Output is correct
31 Correct 489 ms 59304 KB Output is correct
32 Correct 494 ms 64764 KB Output is correct
33 Correct 478 ms 71588 KB Output is correct
34 Correct 5 ms 1628 KB Output is correct
35 Correct 12 ms 2864 KB Output is correct
36 Correct 188 ms 30208 KB Output is correct
37 Correct 289 ms 45384 KB Output is correct
38 Correct 415 ms 60068 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 504 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 219 ms 35208 KB Output is correct
10 Correct 19 ms 3928 KB Output is correct
11 Correct 98 ms 19108 KB Output is correct
12 Correct 22 ms 5724 KB Output is correct
13 Correct 43 ms 14340 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 2 ms 860 KB Output is correct
16 Correct 219 ms 35128 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 495 ms 101176 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 3 ms 1000 KB Output is correct
26 Correct 3 ms 1116 KB Output is correct
27 Correct 4 ms 1348 KB Output is correct
28 Correct 183 ms 40808 KB Output is correct
29 Correct 273 ms 60828 KB Output is correct
30 Correct 373 ms 82600 KB Output is correct
31 Correct 488 ms 103032 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 436 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 2 ms 856 KB Output is correct
44 Correct 3 ms 1116 KB Output is correct
45 Correct 191 ms 29112 KB Output is correct
46 Correct 311 ms 42232 KB Output is correct
47 Correct 278 ms 42152 KB Output is correct
48 Correct 0 ms 344 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Incorrect 0 ms 436 KB Tree @(3, 3) appears more than once: for edges on positions 0 and 3
52 Halted 0 ms 0 KB -