Submission #1220745
Source Code Expand
#include <bits/stdc++.h> #define mset(a,b) memset(a,b,sizeof a) #define mcpy(a,b) memcpy(a,b,sizeof b) #define max(a,b) ((a)<(b)?(b):(a)) #define swap(a,b) a^=b^=a^=b #define lb(x) ((x)&(-(x))) #define inf 0x3f3f3f3f #define N 100010 using namespace std; typedef long long ll; int n,d[N],mx,pos; vector<int> g[N]; inline void dfs(int x,int p){ for(int i=0;i<g[x].size();i++){ int th=g[x][i]; if(th^p)d[th]=d[x]+1,dfs(th,x); } } int main(){ cin>>n; for(int i=1,a,b;i<n;i++)scanf("%d%d",&a,&b),g[a].push_back(b),g[b].push_back(a); dfs(1,0); for(int i=1;i<=n;i++)if(mx<d[i])mx=d[pos=i]; d[pos]=0,dfs(pos,0); mx=0; for(int i=1;i<=n;i++)mx=max(mx,d[i]); printf("%d",((mx+1)>>1)-1); return 0; }
Submission Info
Submission Time | |
---|---|
Task | D - Uninity |
User | cdsfcesf |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 731 Byte |
Status | WA |
Exec Time | 50 ms |
Memory | 10112 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:21:81: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i=1,a,b;i<n;i++)scanf("%d%d",&a,&b),g[a].push_back(b),g[b].push_back(a); ^
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 | 43 ms | 6272 KB |
02.txt | WA | 44 ms | 6272 KB |
03.txt | WA | 45 ms | 6272 KB |
04.txt | WA | 44 ms | 6272 KB |
05.txt | WA | 44 ms | 6272 KB |
06.txt | WA | 44 ms | 6272 KB |
07.txt | WA | 44 ms | 6272 KB |
08.txt | WA | 44 ms | 6272 KB |
09.txt | WA | 31 ms | 7552 KB |
10.txt | WA | 31 ms | 7552 KB |
11.txt | WA | 16 ms | 4992 KB |
12.txt | WA | 16 ms | 4992 KB |
13.txt | WA | 48 ms | 10112 KB |
14.txt | WA | 43 ms | 9344 KB |
15.txt | WA | 48 ms | 8704 KB |
16.txt | WA | 47 ms | 8064 KB |
17.txt | WA | 30 ms | 6520 KB |
18.txt | WA | 30 ms | 6516 KB |
19.txt | WA | 33 ms | 6656 KB |
20.txt | WA | 33 ms | 6656 KB |
21.txt | AC | 34 ms | 6528 KB |
22.txt | WA | 35 ms | 6528 KB |
23.txt | WA | 30 ms | 6520 KB |
24.txt | WA | 30 ms | 6520 KB |
25.txt | AC | 36 ms | 6396 KB |
26.txt | WA | 38 ms | 6400 KB |
27.txt | WA | 38 ms | 6400 KB |
28.txt | WA | 40 ms | 6400 KB |
29.txt | WA | 41 ms | 6400 KB |
30.txt | WA | 45 ms | 6400 KB |
31.txt | WA | 48 ms | 6400 KB |
32.txt | WA | 43 ms | 6272 KB |
33.txt | WA | 44 ms | 6272 KB |
34.txt | WA | 44 ms | 6272 KB |
35.txt | WA | 44 ms | 6272 KB |
36.txt | WA | 45 ms | 6272 KB |
37.txt | WA | 45 ms | 6272 KB |
38.txt | WA | 44 ms | 6144 KB |
39.txt | WA | 45 ms | 6144 KB |
40.txt | WA | 44 ms | 6272 KB |
41.txt | WA | 44 ms | 6272 KB |
42.txt | WA | 45 ms | 6144 KB |
43.txt | WA | 45 ms | 6144 KB |
44.txt | WA | 37 ms | 6656 KB |
45.txt | WA | 37 ms | 6656 KB |
46.txt | WA | 40 ms | 6656 KB |
47.txt | WA | 38 ms | 6656 KB |
48.txt | WA | 41 ms | 6528 KB |
49.txt | WA | 41 ms | 6528 KB |
50.txt | WA | 44 ms | 6400 KB |
51.txt | WA | 45 ms | 6400 KB |
52.txt | WA | 45 ms | 6272 KB |
53.txt | WA | 46 ms | 6272 KB |
54.txt | WA | 46 ms | 6272 KB |
55.txt | WA | 46 ms | 6144 KB |
56.txt | WA | 30 ms | 6520 KB |
57.txt | WA | 40 ms | 8316 KB |
58.txt | WA | 41 ms | 8316 KB |
59.txt | WA | 49 ms | 6272 KB |
60.txt | WA | 50 ms | 6272 KB |
61.txt | WA | 34 ms | 7032 KB |
62.txt | WA | 34 ms | 7032 KB |
63.txt | AC | 2 ms | 2560 KB |
64.txt | WA | 2 ms | 2560 KB |
65.txt | WA | 2 ms | 2560 KB |
66.txt | WA | 2 ms | 2560 KB |
67.txt | AC | 2 ms | 2560 KB |
68.txt | WA | 2 ms | 2560 KB |
69.txt | WA | 2 ms | 2560 KB |
70.txt | WA | 2 ms | 2560 KB |
71.txt | WA | 2 ms | 2560 KB |
72.txt | WA | 2 ms | 2560 KB |
s1.txt | AC | 2 ms | 2560 KB |
s2.txt | AC | 2 ms | 2560 KB |