# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
785038 | 2023-07-17T00:43:08 Z | Charizard2021 | City Mapping (NOI18_citymapping) | C++17 | 16 ms | 8404 KB |
#include<bits/stdc++.h> #include "citymapping.h" using namespace std; const int N = 1000; long long distances[N][N]; long long get_dst(int x, int y) { if (x > y) { swap(x, y); } auto &ret = distances[x][y]; if (~ret){ return ret; } return ret = get_distance(x + 1, y + 1); } long long &dist(int x, int y) { if (x > y) { swap(x, y); } return distances[x][y]; } int sizeSubtree[N]; int counter; vector<pair<int, int> > children[N]; bool visited[N]; vector<pair<int, int> > heavy; void dfs(int u, int p) { sizeSubtree[u] = 1; counter++; for (pair<int, int> x : children[u]){ int v = x.first; if (!visited[v]) { dist(p, v) = dist(p, u) + x.second; dfs(v, p); sizeSubtree[u] += sizeSubtree[v]; } } } int dfs2(int u) { pair<int, int> maxVal = {-1, -1}; for (pair<int, int> x : children[u]){ int v = x.first; if (!visited[v] && (maxVal.first == -1 || sizeSubtree[maxVal.first] < sizeSubtree[v])) { maxVal = x; } } if (~maxVal.first) { heavy.push_back(maxVal); return dfs2(maxVal.first); } return u; } void find_roads(int n, int q, int a[], int b[], int w[]) { for (int i = 0; i < n; i++) { for (int j = 0; j < n; j++) { distances[i][j] = -1; } } for (int i = 0; i < n; i++) { dist(i, i) = 0; } vector<pair<long long, int>> ds; for (int i = 1; i < n; i++) { ds.push_back({get_dst(0, i), i}); } sort(ds.begin(), ds.end()); int m = 0; for (auto &x: ds) { int r = 0; while (true) { counter = 0; dfs(r, r); if (counter == 1) { break; } int l = dfs2(r); long long xl = get_dst(x.second, l), rm = (get_dst(r, x.second) + get_dst(r, l) - xl) / 2; for (auto &y: heavy) { visited[y.first] = 1; } int i = 0; while (rm > 0) { rm -= heavy[i++].second; } int M = (i ? heavy[i - 1].first: r); dist(M, x.second) = (get_dst(r, x.second) + get_dst(l, x.second) - get_dst(r, l)) / 2; heavy.clear(); r = M; } a[m] = 1 + r; b[m] = 1 + x.second; w[m] = dist(r, x.second); children[r].push_back({b[m] - 1, w[m]}); dist(r, b[m] - 1) = w[m]; m++; for (int i = 0; i < n; i++) { visited[i] = 0; } } }
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 14 ms | 8276 KB | Correct: 2691 out of 500000 queries used. |
2 | Correct | 9 ms | 8276 KB | Correct: 2421 out of 500000 queries used. |
3 | Correct | 9 ms | 8296 KB | Correct: 4517 out of 500000 queries used. |
4 | Correct | 9 ms | 8276 KB | Correct: 5567 out of 500000 queries used. |
5 | Correct | 12 ms | 8324 KB | Correct: 3387 out of 500000 queries used. |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 14 ms | 8276 KB | Correct: 2691 out of 500000 queries used. |
2 | Correct | 9 ms | 8276 KB | Correct: 2421 out of 500000 queries used. |
3 | Correct | 9 ms | 8296 KB | Correct: 4517 out of 500000 queries used. |
4 | Correct | 9 ms | 8276 KB | Correct: 5567 out of 500000 queries used. |
5 | Correct | 12 ms | 8324 KB | Correct: 3387 out of 500000 queries used. |
6 | Correct | 15 ms | 8404 KB | Correct: 2009 out of 500000 queries used. |
7 | Correct | 11 ms | 8276 KB | Correct: 2063 out of 500000 queries used. |
8 | Correct | 9 ms | 8276 KB | Correct: 4244 out of 500000 queries used. |
9 | Correct | 9 ms | 8320 KB | Correct: 5089 out of 500000 queries used. |
10 | Correct | 10 ms | 8320 KB | Correct: 3054 out of 500000 queries used. |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 12 ms | 8352 KB | Correct: 2086 out of 12000 queries used. |
2 | Correct | 12 ms | 8276 KB | Correct: 2304 out of 12000 queries used. |
3 | Correct | 13 ms | 8368 KB | Correct: 2457 out of 12000 queries used. |
4 | Correct | 13 ms | 8324 KB | Correct: 2470 out of 12000 queries used. |
5 | Correct | 13 ms | 8276 KB | Correct: 2240 out of 12000 queries used. |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 12 ms | 8352 KB | Correct: 2086 out of 12000 queries used. |
2 | Correct | 12 ms | 8276 KB | Correct: 2304 out of 12000 queries used. |
3 | Correct | 13 ms | 8368 KB | Correct: 2457 out of 12000 queries used. |
4 | Correct | 13 ms | 8324 KB | Correct: 2470 out of 12000 queries used. |
5 | Correct | 13 ms | 8276 KB | Correct: 2240 out of 12000 queries used. |
6 | Correct | 14 ms | 8368 KB | Correct: 2473 out of 12000 queries used. |
7 | Correct | 13 ms | 8276 KB | Correct: 2382 out of 12000 queries used. |
8 | Correct | 13 ms | 8404 KB | Correct: 2207 out of 12000 queries used. |
9 | Correct | 12 ms | 8404 KB | Correct: 2235 out of 12000 queries used. |
10 | Correct | 13 ms | 8276 KB | Correct: 2302 out of 12000 queries used. |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 14 ms | 8276 KB | Correct: 2691 out of 500000 queries used. |
2 | Correct | 9 ms | 8276 KB | Correct: 2421 out of 500000 queries used. |
3 | Correct | 9 ms | 8296 KB | Correct: 4517 out of 500000 queries used. |
4 | Correct | 9 ms | 8276 KB | Correct: 5567 out of 500000 queries used. |
5 | Correct | 12 ms | 8324 KB | Correct: 3387 out of 500000 queries used. |
6 | Correct | 15 ms | 8404 KB | Correct: 2009 out of 500000 queries used. |
7 | Correct | 11 ms | 8276 KB | Correct: 2063 out of 500000 queries used. |
8 | Correct | 9 ms | 8276 KB | Correct: 4244 out of 500000 queries used. |
9 | Correct | 9 ms | 8320 KB | Correct: 5089 out of 500000 queries used. |
10 | Correct | 10 ms | 8320 KB | Correct: 3054 out of 500000 queries used. |
11 | Correct | 12 ms | 8352 KB | Correct: 2086 out of 12000 queries used. |
12 | Correct | 12 ms | 8276 KB | Correct: 2304 out of 12000 queries used. |
13 | Correct | 13 ms | 8368 KB | Correct: 2457 out of 12000 queries used. |
14 | Correct | 13 ms | 8324 KB | Correct: 2470 out of 12000 queries used. |
15 | Correct | 13 ms | 8276 KB | Correct: 2240 out of 12000 queries used. |
16 | Correct | 14 ms | 8368 KB | Correct: 2473 out of 12000 queries used. |
17 | Correct | 13 ms | 8276 KB | Correct: 2382 out of 12000 queries used. |
18 | Correct | 13 ms | 8404 KB | Correct: 2207 out of 12000 queries used. |
19 | Correct | 12 ms | 8404 KB | Correct: 2235 out of 12000 queries used. |
20 | Correct | 13 ms | 8276 KB | Correct: 2302 out of 12000 queries used. |
21 | Correct | 16 ms | 8276 KB | Correct: 2502 out of 25000 queries used. |
22 | Correct | 11 ms | 8276 KB | Correct: 2071 out of 25000 queries used. |
23 | Correct | 12 ms | 8304 KB | Correct: 2284 out of 25000 queries used. |
24 | Correct | 12 ms | 8276 KB | Correct: 2036 out of 25000 queries used. |
25 | Correct | 10 ms | 8304 KB | Correct: 4436 out of 25000 queries used. |
26 | Correct | 9 ms | 8280 KB | Correct: 4358 out of 25000 queries used. |
27 | Correct | 9 ms | 8308 KB | Correct: 4307 out of 25000 queries used. |
28 | Correct | 9 ms | 8320 KB | Correct: 4417 out of 25000 queries used. |
29 | Correct | 9 ms | 8304 KB | Correct: 4502 out of 25000 queries used. |
30 | Correct | 9 ms | 8288 KB | Correct: 4442 out of 25000 queries used. |
31 | Correct | 9 ms | 8352 KB | Correct: 5151 out of 25000 queries used. |
32 | Correct | 13 ms | 8304 KB | Correct: 2223 out of 25000 queries used. |
33 | Correct | 9 ms | 8304 KB | Correct: 5083 out of 25000 queries used. |
34 | Correct | 9 ms | 8308 KB | Correct: 5158 out of 25000 queries used. |
35 | Correct | 9 ms | 8320 KB | Correct: 5100 out of 25000 queries used. |
36 | Correct | 9 ms | 8216 KB | Correct: 5118 out of 25000 queries used. |
37 | Correct | 9 ms | 8276 KB | Correct: 5144 out of 25000 queries used. |
38 | Correct | 9 ms | 8276 KB | Correct: 5102 out of 25000 queries used. |
39 | Correct | 9 ms | 8304 KB | Correct: 5135 out of 25000 queries used. |
40 | Correct | 9 ms | 8276 KB | Correct: 5168 out of 25000 queries used. |
41 | Correct | 9 ms | 8276 KB | Correct: 5124 out of 25000 queries used. |
42 | Correct | 9 ms | 8276 KB | Correct: 5203 out of 25000 queries used. |
43 | Correct | 13 ms | 8396 KB | Correct: 2087 out of 25000 queries used. |
44 | Correct | 10 ms | 8280 KB | Correct: 5116 out of 25000 queries used. |
45 | Correct | 8 ms | 8188 KB | Correct: 5090 out of 25000 queries used. |
46 | Correct | 9 ms | 8284 KB | Correct: 5068 out of 25000 queries used. |
47 | Correct | 9 ms | 8304 KB | Correct: 5179 out of 25000 queries used. |
48 | Correct | 9 ms | 8276 KB | Correct: 5135 out of 25000 queries used. |
49 | Correct | 9 ms | 8312 KB | Correct: 5091 out of 25000 queries used. |
50 | Correct | 9 ms | 8276 KB | Correct: 5105 out of 25000 queries used. |
51 | Correct | 11 ms | 8276 KB | Correct: 5099 out of 25000 queries used. |
52 | Correct | 9 ms | 8276 KB | Correct: 5128 out of 25000 queries used. |
53 | Correct | 9 ms | 8304 KB | Correct: 5144 out of 25000 queries used. |
54 | Correct | 11 ms | 8308 KB | Correct: 2333 out of 25000 queries used. |
55 | Correct | 9 ms | 8276 KB | Correct: 5196 out of 25000 queries used. |
56 | Correct | 9 ms | 8276 KB | Correct: 5141 out of 25000 queries used. |
57 | Correct | 9 ms | 8276 KB | Correct: 5125 out of 25000 queries used. |
58 | Correct | 9 ms | 8284 KB | Correct: 5115 out of 25000 queries used. |
59 | Correct | 9 ms | 8180 KB | Correct: 5104 out of 25000 queries used. |
60 | Correct | 10 ms | 8276 KB | Correct: 3041 out of 25000 queries used. |
61 | Correct | 11 ms | 8276 KB | Correct: 3317 out of 25000 queries used. |
62 | Correct | 10 ms | 8292 KB | Correct: 2917 out of 25000 queries used. |
63 | Correct | 11 ms | 8356 KB | Correct: 3317 out of 25000 queries used. |
64 | Correct | 10 ms | 8312 KB | Correct: 3103 out of 25000 queries used. |
65 | Correct | 12 ms | 8312 KB | Correct: 2067 out of 25000 queries used. |
66 | Correct | 11 ms | 8308 KB | Correct: 3228 out of 25000 queries used. |
67 | Correct | 11 ms | 8316 KB | Correct: 2018 out of 25000 queries used. |
68 | Correct | 12 ms | 8292 KB | Correct: 2394 out of 25000 queries used. |
69 | Correct | 12 ms | 8276 KB | Correct: 2451 out of 25000 queries used. |
70 | Correct | 13 ms | 8276 KB | Correct: 2414 out of 25000 queries used. |