Submission #8408536
Source Code Expand
#include<bits/stdc++.h> #include<ext/pb_ds/priority_queue.hpp> const int maxn = 100100; std::set<int> to[maxn]; int n,rt; char c[maxn]; int vis[maxn],v[maxn]; std::queue<int> q; int ans = -2,mx; std::pair<int,int> find(int x,int f = 0){ std::pair<int,int> ret(-v[x],x); for(int i : to[x]) if(i != f) ret = std::max(ret,find(i,x)); return ret.first += v[x],ret; } void dfs1(int x,int f = 0){ vis[x] = 1; for(int i : to[x]) if(i != f) dfs1(i,x); for(std::set<int>::iterator it = to[x].begin();it != to[x].end();) { if(to[*it].size() == 1 && c[*it] == 'B' && *it != f){ vis[*it] = 0; to[*it].clear(); it = to[x].erase(it); } else ++ it; } } int main(){ std::ios::sync_with_stdio(false),std::cin.tie(0); std::cin >> n; for(int i = 1,x,y;i < n;++i) std::cin >> x >> y,to[x].insert(y),to[y].insert(x); std::cin >> c + 1; for(int i = 1;i <= n;++i){ vis[i] = 1; if(to[i].size() <= 1 && c[i] == 'B') q.push(i); } for(;!q.empty();){ int t = q.front(); vis[t] = 0; q.pop(); const int x = *to[t].begin(); to[x].erase(t); if(to[x].size() <= 1 && c[x] == 'B') q.push(x); } ans = std::count(vis + 1,vis + n + 1,1) - 1 << 1; for(int i = 1;i <= n;++i) if(vis[i]) { if((c[i] == 'W') ^ to[i].size() & 1) { v[i] = 2; ++ ans; } } for(int i = 1;i <= n;++i) if(vis[i]) { std::cout << ans - find(find(i).second).first << '\n'; return 0; } std::cout << 0 << '\n'; }
Submission Info
Submission Time | |
---|---|
Task | F - Monochrome Cat |
User | skip2004 |
Language | C++14 (GCC 5.4.1) |
Score | 800 |
Code Size | 1441 Byte |
Status | AC |
Exec Time | 105 ms |
Memory | 24576 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 800 / 800 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
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 | 4992 KB |
0_001.txt | AC | 3 ms | 4992 KB |
0_002.txt | AC | 3 ms | 4992 KB |
0_003.txt | AC | 3 ms | 4992 KB |
1_003.txt | AC | 3 ms | 4992 KB |
1_004.txt | AC | 3 ms | 4992 KB |
1_005.txt | AC | 3 ms | 4992 KB |
1_006.txt | AC | 3 ms | 4992 KB |
1_007.txt | AC | 3 ms | 4992 KB |
1_008.txt | AC | 3 ms | 4992 KB |
1_009.txt | AC | 3 ms | 4992 KB |
1_010.txt | AC | 3 ms | 4992 KB |
1_011.txt | AC | 3 ms | 4992 KB |
1_012.txt | AC | 3 ms | 4992 KB |
1_013.txt | AC | 3 ms | 4992 KB |
1_014.txt | AC | 3 ms | 4992 KB |
1_015.txt | AC | 3 ms | 4992 KB |
1_016.txt | AC | 3 ms | 4992 KB |
1_017.txt | AC | 3 ms | 4992 KB |
1_018.txt | AC | 3 ms | 4992 KB |
1_019.txt | AC | 3 ms | 4992 KB |
1_020.txt | AC | 3 ms | 4992 KB |
1_021.txt | AC | 3 ms | 4992 KB |
1_022.txt | AC | 3 ms | 4992 KB |
1_023.txt | AC | 3 ms | 4992 KB |
1_024.txt | AC | 3 ms | 4992 KB |
1_025.txt | AC | 3 ms | 4992 KB |
1_026.txt | AC | 3 ms | 4992 KB |
1_027.txt | AC | 3 ms | 4992 KB |
1_028.txt | AC | 3 ms | 4992 KB |
1_029.txt | AC | 3 ms | 4992 KB |
1_030.txt | AC | 3 ms | 4992 KB |
1_031.txt | AC | 3 ms | 4992 KB |
1_032.txt | AC | 3 ms | 4992 KB |
1_033.txt | AC | 3 ms | 4992 KB |
1_034.txt | AC | 3 ms | 4992 KB |
1_035.txt | AC | 3 ms | 4992 KB |
1_036.txt | AC | 3 ms | 4992 KB |
1_037.txt | AC | 3 ms | 4992 KB |
1_038.txt | AC | 3 ms | 4992 KB |
1_039.txt | AC | 3 ms | 4992 KB |
1_040.txt | AC | 3 ms | 4992 KB |
1_041.txt | AC | 3 ms | 4992 KB |
1_042.txt | AC | 3 ms | 4992 KB |
1_043.txt | AC | 3 ms | 4992 KB |
1_044.txt | AC | 3 ms | 4992 KB |
1_045.txt | AC | 25 ms | 12032 KB |
1_046.txt | AC | 30 ms | 13440 KB |
1_047.txt | AC | 54 ms | 14720 KB |
1_048.txt | AC | 48 ms | 12416 KB |
1_049.txt | AC | 63 ms | 16384 KB |
1_050.txt | AC | 64 ms | 17408 KB |
1_051.txt | AC | 79 ms | 12416 KB |
1_052.txt | AC | 15 ms | 6912 KB |
1_053.txt | AC | 68 ms | 13696 KB |
1_054.txt | AC | 26 ms | 8576 KB |
1_055.txt | AC | 61 ms | 12288 KB |
1_056.txt | AC | 36 ms | 9728 KB |
1_057.txt | AC | 4 ms | 5248 KB |
1_058.txt | AC | 31 ms | 11776 KB |
1_059.txt | AC | 21 ms | 8448 KB |
1_060.txt | AC | 61 ms | 12416 KB |
1_061.txt | AC | 73 ms | 16768 KB |
1_062.txt | AC | 30 ms | 11776 KB |
1_063.txt | AC | 42 ms | 11136 KB |
1_064.txt | AC | 30 ms | 9344 KB |
1_065.txt | AC | 6 ms | 5504 KB |
1_066.txt | AC | 81 ms | 13184 KB |
1_067.txt | AC | 13 ms | 6784 KB |
1_068.txt | AC | 36 ms | 10368 KB |
1_069.txt | AC | 18 ms | 7680 KB |
1_070.txt | AC | 30 ms | 9856 KB |
1_071.txt | AC | 58 ms | 13568 KB |
1_072.txt | AC | 38 ms | 10112 KB |
1_073.txt | AC | 7 ms | 5888 KB |
1_074.txt | AC | 6 ms | 5632 KB |
1_075.txt | AC | 27 ms | 9344 KB |
1_076.txt | AC | 87 ms | 15104 KB |
1_077.txt | AC | 78 ms | 13056 KB |
1_078.txt | AC | 19 ms | 7936 KB |
1_079.txt | AC | 25 ms | 9216 KB |
1_080.txt | AC | 30 ms | 9984 KB |
1_081.txt | AC | 96 ms | 24576 KB |
1_082.txt | AC | 105 ms | 24576 KB |
1_083.txt | AC | 59 ms | 14848 KB |
1_084.txt | AC | 65 ms | 14848 KB |
1_085.txt | AC | 86 ms | 22784 KB |
1_086.txt | AC | 87 ms | 24576 KB |
1_087.txt | AC | 100 ms | 14848 KB |
1_088.txt | AC | 99 ms | 15104 KB |
1_089.txt | AC | 84 ms | 15232 KB |
1_090.txt | AC | 97 ms | 15232 KB |
1_091.txt | AC | 98 ms | 14848 KB |
1_092.txt | AC | 83 ms | 15232 KB |
1_093.txt | AC | 99 ms | 19840 KB |
1_094.txt | AC | 80 ms | 19968 KB |
1_095.txt | AC | 75 ms | 14976 KB |
1_096.txt | AC | 87 ms | 14976 KB |
1_097.txt | AC | 84 ms | 18304 KB |
1_098.txt | AC | 78 ms | 20096 KB |
1_099.txt | AC | 91 ms | 15232 KB |
1_100.txt | AC | 75 ms | 15360 KB |
1_101.txt | AC | 76 ms | 15104 KB |
1_102.txt | AC | 98 ms | 15104 KB |
1_103.txt | AC | 67 ms | 14848 KB |
1_104.txt | AC | 76 ms | 15488 KB |
1_105.txt | AC | 75 ms | 15232 KB |
1_106.txt | AC | 68 ms | 15360 KB |
1_107.txt | AC | 77 ms | 14976 KB |
1_108.txt | AC | 68 ms | 14976 KB |
1_109.txt | AC | 73 ms | 14848 KB |
1_110.txt | AC | 70 ms | 15360 KB |
1_111.txt | AC | 67 ms | 15232 KB |
1_112.txt | AC | 74 ms | 15360 KB |
1_113.txt | AC | 75 ms | 14976 KB |
1_114.txt | AC | 69 ms | 14976 KB |
1_115.txt | AC | 59 ms | 14848 KB |
1_116.txt | AC | 68 ms | 15360 KB |