Submission #2200437
Source Code Expand
#include <bits/stdc++.h> #define N 100005 using namespace std; struct edge{ int k,next; }e[N<<1]; int n,home[N],cnt=-1,lg2[N<<1]; void add(int x,int y){ cnt++; e[cnt].k=y; e[cnt].next=home[x]; home[x]=cnt; } int f[N],sum[25]; void dfs(int k,int F){ for(int i=home[k];~i;i=e[i].next)if(e[i].k!=F){ dfs(e[i].k,k); } memset(sum,0,sizeof(sum)); for(int i=home[k];~i;i=e[i].next)if(e[i].k!=F){ int g=f[e[i].k],t; while(g) t=g&-g,sum[lg2[t]]++,g-=t; } int o=0; for(int i=20;~i;i--){ if(sum[i]){ if(!o) o=(1<<i); if(sum[i]>1){ i++; while(sum[i]){ f[k]^=(1<<i); i++; } f[k]|=(1<<i); return; } f[k]|=(1<<i); }else if(o){ int h=0,g; while(i>=0){ if(!sum[i]) g=(1<<i)|h; else h|=(1<<i); if(sum[i]>1) break; i--; } f[k]|=g; return; } } f[k]=o+o; if(!f[k]) f[k]=1; } int main(){ //freopen("test.in","r",stdin); memset(home,-1,sizeof(home)); for(int i=2;i<=200000;i++) lg2[i]=lg2[i>>1]+1; scanf("%d",&n); for(int i=1,x,y;i<n;i++){ scanf("%d%d",&x,&y); add(x,y);add(y,x); } dfs(1,0); printf("%d\n",lg2[f[1]]); return 0; }
Submission Info
Submission Time | |
---|---|
Task | D - Uninity |
User | liumy2010 |
Language | C++14 (GCC 5.4.1) |
Score | 1400 |
Code Size | 1183 Byte |
Status | AC |
Exec Time | 36 ms |
Memory | 6784 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:57:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ ./Main.cpp:59:22: 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 | 1400 / 1400 | ||||
Status |
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|
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 | AC | 28 ms | 3328 KB |
02.txt | AC | 28 ms | 3328 KB |
03.txt | AC | 28 ms | 3328 KB |
04.txt | AC | 29 ms | 3328 KB |
05.txt | AC | 28 ms | 3328 KB |
06.txt | AC | 29 ms | 3328 KB |
07.txt | AC | 28 ms | 3328 KB |
08.txt | AC | 29 ms | 3328 KB |
09.txt | AC | 23 ms | 4480 KB |
10.txt | AC | 24 ms | 5504 KB |
11.txt | AC | 12 ms | 3328 KB |
12.txt | AC | 12 ms | 3456 KB |
13.txt | AC | 36 ms | 6784 KB |
14.txt | AC | 33 ms | 6528 KB |
15.txt | AC | 34 ms | 6016 KB |
16.txt | AC | 32 ms | 4480 KB |
17.txt | AC | 24 ms | 3328 KB |
18.txt | AC | 24 ms | 3456 KB |
19.txt | AC | 24 ms | 3328 KB |
20.txt | AC | 25 ms | 3328 KB |
21.txt | AC | 26 ms | 3328 KB |
22.txt | AC | 27 ms | 3328 KB |
23.txt | AC | 24 ms | 3328 KB |
24.txt | AC | 23 ms | 3328 KB |
25.txt | AC | 25 ms | 3328 KB |
26.txt | AC | 26 ms | 3328 KB |
27.txt | AC | 26 ms | 3328 KB |
28.txt | AC | 27 ms | 3328 KB |
29.txt | AC | 26 ms | 3328 KB |
30.txt | AC | 28 ms | 3328 KB |
31.txt | AC | 27 ms | 3328 KB |
32.txt | AC | 28 ms | 3328 KB |
33.txt | AC | 28 ms | 3328 KB |
34.txt | AC | 28 ms | 3328 KB |
35.txt | AC | 28 ms | 3328 KB |
36.txt | AC | 28 ms | 3328 KB |
37.txt | AC | 29 ms | 3328 KB |
38.txt | AC | 29 ms | 3456 KB |
39.txt | AC | 29 ms | 3328 KB |
40.txt | AC | 29 ms | 3328 KB |
41.txt | AC | 28 ms | 3456 KB |
42.txt | AC | 30 ms | 3328 KB |
43.txt | AC | 29 ms | 3328 KB |
44.txt | AC | 26 ms | 3456 KB |
45.txt | AC | 26 ms | 3456 KB |
46.txt | AC | 27 ms | 3456 KB |
47.txt | AC | 27 ms | 3456 KB |
48.txt | AC | 28 ms | 3456 KB |
49.txt | AC | 28 ms | 3456 KB |
50.txt | AC | 29 ms | 3456 KB |
51.txt | AC | 29 ms | 3456 KB |
52.txt | AC | 30 ms | 3456 KB |
53.txt | AC | 30 ms | 3456 KB |
54.txt | AC | 30 ms | 3456 KB |
55.txt | AC | 30 ms | 3456 KB |
56.txt | AC | 23 ms | 3328 KB |
57.txt | AC | 30 ms | 5760 KB |
58.txt | AC | 30 ms | 5760 KB |
59.txt | AC | 33 ms | 3456 KB |
60.txt | AC | 32 ms | 3456 KB |
61.txt | AC | 25 ms | 4096 KB |
62.txt | AC | 26 ms | 4096 KB |
63.txt | AC | 2 ms | 1408 KB |
64.txt | AC | 2 ms | 1408 KB |
65.txt | AC | 2 ms | 1408 KB |
66.txt | AC | 2 ms | 1408 KB |
67.txt | AC | 2 ms | 1408 KB |
68.txt | AC | 2 ms | 1408 KB |
69.txt | AC | 2 ms | 1408 KB |
70.txt | AC | 2 ms | 1408 KB |
71.txt | AC | 2 ms | 1408 KB |
72.txt | AC | 2 ms | 1408 KB |
s1.txt | AC | 2 ms | 1408 KB |
s2.txt | AC | 2 ms | 1408 KB |