Submission #8381081
Source Code Expand
#include <bits/stdc++.h> using namespace std; vector <int> e[200005]; int d[200005]; bool ban[200005],val[200005]; int dis[200005]; int dfs(int x,int fa) { dis[x]=dis[fa]+val[x]; int ans=x; for(int i=0;i<e[x].size();i++) if (e[x][i]!=fa&&!ban[e[x][i]]) { int u=e[x][i]; int t=dfs(u,x); if (dis[t]>dis[ans]) ans=t; } return ans; } char str[200005]; queue <int> q; int main() { int n; scanf("%d",&n); for(int i=1;i<n;i++) { int x,y; scanf("%d%d",&x,&y); e[x].push_back(y); e[y].push_back(x); d[x]++;d[y]++; } scanf("%s",str+1); bool ok=0; for(int i=1;i<=n;i++) { val[i]=(str[i]=='W'); ok|=val[i]; } if (!ok) { puts("0"); return 0; } for(int i=1;i<=n;i++) if (!val[i]&&d[i]<=1) q.push(i); while (!q.empty()) { int x=q.front();q.pop(); ban[x]=1; for(int i=0;i<e[x].size();i++) if (!ban[e[x][i]]) { int u=e[x][i]; d[u]--; if (!val[u]&&d[u]<=1) q.push(u); } } int rt=0,s=-2; for(int i=1;i<=n;i++) if (!ban[i]) { rt=i; for(int j=0;j<e[i].size();j++) if (!ban[e[i][j]]) val[e[i][j]]^=1; s+=2; } for(int i=1;i<=n;i++) if (!ban[i]) s+=val[i]; rt=dfs(rt,0); int x=dfs(rt,0); printf("%d\n",max(1,s-2*dis[x])); return 0; }
Submission Info
Submission Time | |
---|---|
Task | F - Monochrome Cat |
User | mayaohua |
Language | C++14 (GCC 5.4.1) |
Score | 800 |
Code Size | 1358 Byte |
Status | AC |
Exec Time | 53 ms |
Memory | 15360 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:29:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ ./Main.cpp:32:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^ ./Main.cpp:37:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",str+1); ^
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 800 / 800 | ||||
Status |
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|
Set Name | Test Cases |
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Sample | 0_000.txt, 0_001.txt, 0_002.txt, 0_003.txt |
All | 0_000.txt, 0_001.txt, 0_002.txt, 0_003.txt, 1_003.txt, 1_004.txt, 1_005.txt, 1_006.txt, 1_007.txt, 1_008.txt, 1_009.txt, 1_010.txt, 1_011.txt, 1_012.txt, 1_013.txt, 1_014.txt, 1_015.txt, 1_016.txt, 1_017.txt, 1_018.txt, 1_019.txt, 1_020.txt, 1_021.txt, 1_022.txt, 1_023.txt, 1_024.txt, 1_025.txt, 1_026.txt, 1_027.txt, 1_028.txt, 1_029.txt, 1_030.txt, 1_031.txt, 1_032.txt, 1_033.txt, 1_034.txt, 1_035.txt, 1_036.txt, 1_037.txt, 1_038.txt, 1_039.txt, 1_040.txt, 1_041.txt, 1_042.txt, 1_043.txt, 1_044.txt, 1_045.txt, 1_046.txt, 1_047.txt, 1_048.txt, 1_049.txt, 1_050.txt, 1_051.txt, 1_052.txt, 1_053.txt, 1_054.txt, 1_055.txt, 1_056.txt, 1_057.txt, 1_058.txt, 1_059.txt, 1_060.txt, 1_061.txt, 1_062.txt, 1_063.txt, 1_064.txt, 1_065.txt, 1_066.txt, 1_067.txt, 1_068.txt, 1_069.txt, 1_070.txt, 1_071.txt, 1_072.txt, 1_073.txt, 1_074.txt, 1_075.txt, 1_076.txt, 1_077.txt, 1_078.txt, 1_079.txt, 1_080.txt, 1_081.txt, 1_082.txt, 1_083.txt, 1_084.txt, 1_085.txt, 1_086.txt, 1_087.txt, 1_088.txt, 1_089.txt, 1_090.txt, 1_091.txt, 1_092.txt, 1_093.txt, 1_094.txt, 1_095.txt, 1_096.txt, 1_097.txt, 1_098.txt, 1_099.txt, 1_100.txt, 1_101.txt, 1_102.txt, 1_103.txt, 1_104.txt, 1_105.txt, 1_106.txt, 1_107.txt, 1_108.txt, 1_109.txt, 1_110.txt, 1_111.txt, 1_112.txt, 1_113.txt, 1_114.txt, 1_115.txt, 1_116.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
0_000.txt | AC | 3 ms | 5120 KB |
0_001.txt | AC | 3 ms | 5120 KB |
0_002.txt | AC | 3 ms | 4992 KB |
0_003.txt | AC | 3 ms | 5120 KB |
1_003.txt | AC | 3 ms | 5120 KB |
1_004.txt | AC | 3 ms | 4992 KB |
1_005.txt | AC | 3 ms | 4992 KB |
1_006.txt | AC | 3 ms | 5120 KB |
1_007.txt | AC | 3 ms | 5120 KB |
1_008.txt | AC | 3 ms | 5120 KB |
1_009.txt | AC | 3 ms | 5120 KB |
1_010.txt | AC | 3 ms | 5120 KB |
1_011.txt | AC | 3 ms | 4992 KB |
1_012.txt | AC | 3 ms | 5120 KB |
1_013.txt | AC | 3 ms | 5120 KB |
1_014.txt | AC | 3 ms | 5120 KB |
1_015.txt | AC | 3 ms | 5120 KB |
1_016.txt | AC | 3 ms | 5120 KB |
1_017.txt | AC | 3 ms | 5120 KB |
1_018.txt | AC | 3 ms | 5120 KB |
1_019.txt | AC | 3 ms | 5120 KB |
1_020.txt | AC | 3 ms | 5120 KB |
1_021.txt | AC | 3 ms | 5120 KB |
1_022.txt | AC | 3 ms | 5120 KB |
1_023.txt | AC | 3 ms | 5120 KB |
1_024.txt | AC | 3 ms | 5120 KB |
1_025.txt | AC | 3 ms | 5120 KB |
1_026.txt | AC | 3 ms | 5120 KB |
1_027.txt | AC | 3 ms | 5120 KB |
1_028.txt | AC | 3 ms | 5120 KB |
1_029.txt | AC | 3 ms | 5120 KB |
1_030.txt | AC | 3 ms | 5120 KB |
1_031.txt | AC | 3 ms | 5120 KB |
1_032.txt | AC | 3 ms | 5120 KB |
1_033.txt | AC | 3 ms | 5120 KB |
1_034.txt | AC | 3 ms | 5120 KB |
1_035.txt | AC | 3 ms | 5120 KB |
1_036.txt | AC | 3 ms | 5120 KB |
1_037.txt | AC | 3 ms | 5120 KB |
1_038.txt | AC | 3 ms | 5120 KB |
1_039.txt | AC | 3 ms | 5120 KB |
1_040.txt | AC | 3 ms | 5120 KB |
1_041.txt | AC | 3 ms | 4992 KB |
1_042.txt | AC | 3 ms | 5120 KB |
1_043.txt | AC | 3 ms | 5120 KB |
1_044.txt | AC | 3 ms | 5120 KB |
1_045.txt | AC | 18 ms | 8704 KB |
1_046.txt | AC | 22 ms | 9600 KB |
1_047.txt | AC | 34 ms | 8704 KB |
1_048.txt | AC | 29 ms | 7936 KB |
1_049.txt | AC | 34 ms | 10752 KB |
1_050.txt | AC | 31 ms | 11648 KB |
1_051.txt | AC | 25 ms | 8440 KB |
1_052.txt | AC | 8 ms | 6016 KB |
1_053.txt | AC | 24 ms | 8568 KB |
1_054.txt | AC | 12 ms | 6652 KB |
1_055.txt | AC | 24 ms | 8440 KB |
1_056.txt | AC | 15 ms | 7164 KB |
1_057.txt | AC | 3 ms | 5120 KB |
1_058.txt | AC | 23 ms | 8448 KB |
1_059.txt | AC | 13 ms | 6400 KB |
1_060.txt | AC | 30 ms | 8064 KB |
1_061.txt | AC | 40 ms | 10880 KB |
1_062.txt | AC | 22 ms | 8448 KB |
1_063.txt | AC | 24 ms | 7680 KB |
1_064.txt | AC | 20 ms | 7040 KB |
1_065.txt | AC | 4 ms | 5248 KB |
1_066.txt | AC | 29 ms | 8444 KB |
1_067.txt | AC | 9 ms | 5888 KB |
1_068.txt | AC | 21 ms | 7424 KB |
1_069.txt | AC | 13 ms | 6144 KB |
1_070.txt | AC | 23 ms | 7040 KB |
1_071.txt | AC | 29 ms | 8192 KB |
1_072.txt | AC | 21 ms | 7168 KB |
1_073.txt | AC | 6 ms | 5376 KB |
1_074.txt | AC | 5 ms | 5376 KB |
1_075.txt | AC | 20 ms | 6784 KB |
1_076.txt | AC | 45 ms | 9344 KB |
1_077.txt | AC | 29 ms | 8064 KB |
1_078.txt | AC | 13 ms | 6272 KB |
1_079.txt | AC | 20 ms | 6784 KB |
1_080.txt | AC | 22 ms | 7168 KB |
1_081.txt | AC | 50 ms | 15360 KB |
1_082.txt | AC | 52 ms | 15360 KB |
1_083.txt | AC | 35 ms | 8704 KB |
1_084.txt | AC | 39 ms | 8832 KB |
1_085.txt | AC | 49 ms | 12928 KB |
1_086.txt | AC | 53 ms | 15360 KB |
1_087.txt | AC | 33 ms | 9592 KB |
1_088.txt | AC | 34 ms | 9848 KB |
1_089.txt | AC | 29 ms | 9208 KB |
1_090.txt | AC | 30 ms | 9720 KB |
1_091.txt | AC | 33 ms | 9592 KB |
1_092.txt | AC | 28 ms | 9208 KB |
1_093.txt | AC | 48 ms | 12288 KB |
1_094.txt | AC | 49 ms | 12416 KB |
1_095.txt | AC | 34 ms | 8832 KB |
1_096.txt | AC | 40 ms | 8960 KB |
1_097.txt | AC | 48 ms | 10880 KB |
1_098.txt | AC | 50 ms | 12544 KB |
1_099.txt | AC | 40 ms | 9340 KB |
1_100.txt | AC | 42 ms | 9596 KB |
1_101.txt | AC | 32 ms | 8956 KB |
1_102.txt | AC | 36 ms | 9340 KB |
1_103.txt | AC | 40 ms | 9340 KB |
1_104.txt | AC | 40 ms | 9724 KB |
1_105.txt | AC | 46 ms | 9216 KB |
1_106.txt | AC | 47 ms | 9344 KB |
1_107.txt | AC | 35 ms | 8832 KB |
1_108.txt | AC | 40 ms | 9088 KB |
1_109.txt | AC | 46 ms | 9216 KB |
1_110.txt | AC | 47 ms | 9472 KB |
1_111.txt | AC | 46 ms | 9216 KB |
1_112.txt | AC | 47 ms | 9472 KB |
1_113.txt | AC | 35 ms | 8832 KB |
1_114.txt | AC | 40 ms | 9088 KB |
1_115.txt | AC | 46 ms | 9216 KB |
1_116.txt | AC | 46 ms | 9472 KB |