Submission #1219761
Source Code Expand
#include <bits/stdc++.h> using namespace std; //#define FILE_IO int N; vector <int> edg[100005]; int h[100005], sz[100005]; int cntr[100005]; void DFS(int nod, int fth) { h[nod] = 1 + h[fth]; sz[nod] = 1; for(auto nxt: edg[nod]) if(nxt != fth && !cntr[nxt]) { DFS(nxt, nod); sz[nod] += sz[nxt]; } } int getCentroid(int nod, int szmax) { for(auto nxt: edg[nod]) if(sz[nod] > sz[nxt] && sz[nxt] > szmax) return getCentroid(nxt, szmax); return nod; } int solve(int nod) { DFS(nod, 0); if(sz[nod] == 1) return 0; int root = getCentroid(nod, sz[nod] / 2); cntr[root] = 1; int ans = 0; for(auto nxt: edg[root]) if(!cntr[nxt]) { int hh = solve(nxt); ans = max(ans, hh); } ans++; return ans; } int main() { #ifdef FILE_IO freopen("1.in", "r", stdin); freopen("1.out", "w", stdout); #endif scanf("%d", &N); for(int i = 1; i < N; i++) { int x, y; scanf("%d%d", &x, &y); edg[x].push_back(y); edg[y].push_back(x); } int ans = solve(1); printf("%d\n", ans); return 0; }
Submission Info
Submission Time | |
---|---|
Task | D - Uninity |
User | bogdan10bos |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 1285 Byte |
Status | WA |
Exec Time | 129 ms |
Memory | 11392 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:57:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^ ./Main.cpp:61:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^
Judge Result
Set Name | Sample | All | ||||||
---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 1400 | ||||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | s1.txt, s2.txt |
All | 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, 26.txt, 27.txt, 28.txt, 29.txt, 30.txt, 31.txt, 32.txt, 33.txt, 34.txt, 35.txt, 36.txt, 37.txt, 38.txt, 39.txt, 40.txt, 41.txt, 42.txt, 43.txt, 44.txt, 45.txt, 46.txt, 47.txt, 48.txt, 49.txt, 50.txt, 51.txt, 52.txt, 53.txt, 54.txt, 55.txt, 56.txt, 57.txt, 58.txt, 59.txt, 60.txt, 61.txt, 62.txt, 63.txt, 64.txt, 65.txt, 66.txt, 67.txt, 68.txt, 69.txt, 70.txt, 71.txt, 72.txt, s1.txt, s2.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01.txt | WA | 68 ms | 7040 KB |
02.txt | AC | 69 ms | 7040 KB |
03.txt | WA | 70 ms | 7040 KB |
04.txt | WA | 69 ms | 7040 KB |
05.txt | WA | 71 ms | 7040 KB |
06.txt | WA | 69 ms | 7040 KB |
07.txt | AC | 68 ms | 7040 KB |
08.txt | AC | 68 ms | 7040 KB |
09.txt | AC | 74 ms | 7808 KB |
10.txt | AC | 76 ms | 9088 KB |
11.txt | AC | 32 ms | 5760 KB |
12.txt | AC | 32 ms | 5888 KB |
13.txt | AC | 129 ms | 11392 KB |
14.txt | AC | 114 ms | 10880 KB |
15.txt | AC | 123 ms | 10368 KB |
16.txt | AC | 117 ms | 8448 KB |
17.txt | AC | 32 ms | 6904 KB |
18.txt | AC | 32 ms | 6900 KB |
19.txt | AC | 36 ms | 7168 KB |
20.txt | AC | 37 ms | 7040 KB |
21.txt | AC | 38 ms | 7040 KB |
22.txt | AC | 41 ms | 7040 KB |
23.txt | AC | 31 ms | 6904 KB |
24.txt | AC | 31 ms | 6904 KB |
25.txt | AC | 38 ms | 7164 KB |
26.txt | AC | 43 ms | 7168 KB |
27.txt | AC | 44 ms | 7168 KB |
28.txt | AC | 47 ms | 7168 KB |
29.txt | AC | 49 ms | 7168 KB |
30.txt | AC | 56 ms | 7168 KB |
31.txt | WA | 57 ms | 7168 KB |
32.txt | WA | 58 ms | 7040 KB |
33.txt | AC | 58 ms | 7040 KB |
34.txt | WA | 63 ms | 7040 KB |
35.txt | AC | 63 ms | 7040 KB |
36.txt | WA | 68 ms | 7040 KB |
37.txt | WA | 68 ms | 7040 KB |
38.txt | WA | 73 ms | 6912 KB |
39.txt | WA | 76 ms | 6912 KB |
40.txt | WA | 73 ms | 7040 KB |
41.txt | WA | 73 ms | 7040 KB |
42.txt | WA | 77 ms | 8576 KB |
43.txt | WA | 82 ms | 6912 KB |
44.txt | WA | 60 ms | 7424 KB |
45.txt | WA | 61 ms | 7424 KB |
46.txt | WA | 66 ms | 7424 KB |
47.txt | WA | 66 ms | 7424 KB |
48.txt | WA | 73 ms | 7296 KB |
49.txt | WA | 74 ms | 7296 KB |
50.txt | WA | 86 ms | 7168 KB |
51.txt | WA | 87 ms | 7168 KB |
52.txt | WA | 97 ms | 7040 KB |
53.txt | WA | 95 ms | 7040 KB |
54.txt | WA | 97 ms | 7040 KB |
55.txt | WA | 96 ms | 7040 KB |
56.txt | AC | 31 ms | 6904 KB |
57.txt | WA | 82 ms | 10236 KB |
58.txt | WA | 82 ms | 10236 KB |
59.txt | AC | 84 ms | 7040 KB |
60.txt | AC | 84 ms | 7040 KB |
61.txt | WA | 48 ms | 8184 KB |
62.txt | WA | 48 ms | 8184 KB |
63.txt | AC | 2 ms | 2560 KB |
64.txt | AC | 2 ms | 2560 KB |
65.txt | AC | 2 ms | 2560 KB |
66.txt | AC | 2 ms | 2560 KB |
67.txt | AC | 2 ms | 2560 KB |
68.txt | AC | 2 ms | 2560 KB |
69.txt | AC | 2 ms | 2560 KB |
70.txt | AC | 2 ms | 2560 KB |
71.txt | AC | 2 ms | 2560 KB |
72.txt | AC | 2 ms | 2560 KB |
s1.txt | AC | 2 ms | 2560 KB |
s2.txt | AC | 2 ms | 2560 KB |