Submission #1799617
Source Code Expand
#include<bits/stdc++.h> #include<vector> #define N 400005 #define LL long long #define PAIR pair<int,int> using namespace std; int n,lw,a[N],g[N],f[N]; PAIR w[N]; LL ans; vector<int> G[N]; void dfs(int t,int fa) { int i; g[t]=a[t]; for(i=0;i<G[t].size();i++) if(G[t][i]!=fa){ dfs(G[t][i],t); f[t]=max(f[t],f[G[t][i]]+1); g[t]+=g[G[t][i]]; } } void DFS(int t,int fa) { int i,sp=0,sq=0,p,q,r,s; w[lw=1]=PAIR(0,a[t]); for(i=0;i<G[t].size();i++) w[++lw]=PAIR(f[G[t][i]]+1,g[G[t][i]]); sort(w+1,w+lw+1),p=0; for(i=1;i<lw;i++) if(p+=w[i].second){ if(i==lw-1){ if(w[i+1].first>w[i].first) ans++; if(w[i+1].first>w[i].first+1) ans++; } else ans+=w[i+1].first-w[i].first; } for(i=0;i<G[t].size();i++) if(f[G[t][i]]>f[sp]) sq=sp,sp=G[t][i]; else if(f[G[t][i]]>f[sq]) sq=G[t][i]; for(i=0;i<G[t].size();i++) if(G[t][i]!=fa){ p=f[t],q=g[t],r=f[G[t][i]],s=g[G[t][i]]; f[t]=(sp==G[t][i] ? f[sq]+1 : f[t]); f[G[t][i]]=max(f[G[t][i]],f[t]+1); g[t]-=g[G[t][i]],g[G[t][i]]+=g[t]; DFS(G[t][i],t); f[t]=p,g[t]=q,f[G[t][i]]=r,g[G[t][i]]=s; } } int main() { int i,x,y; f[0]=-1; scanf("%d",&n); for(i=1;i<n;i++){ scanf("%d %d\n",&x,&y); G[x].push_back(y); G[y].push_back(x); } x=0,y=0; for(i=1;i<=n;i++) a[i]=getchar()-'0'; dfs(1,0); DFS(1,0); cout<<ans+1; return 0; }
Submission Info
Submission Time | |
---|---|
Task | F - Black Radius |
User | MemorySlices |
Language | C++14 (GCC 5.4.1) |
Score | 1900 |
Code Size | 1403 Byte |
Status | AC |
Exec Time | 195 ms |
Memory | 35200 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:49:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ ./Main.cpp:51:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n",&x,&y); ^
Judge Result
Set Name | Sample | Subtask | All | ||||||
---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 1300 / 1300 | 600 / 600 | ||||||
Status |
|
|
|
Set Name | Test Cases |
---|---|
Sample | 0_00.txt, 0_01.txt, 0_02.txt |
Subtask | 0_01.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt, 1_12.txt, 1_13.txt, 1_14.txt, 1_15.txt, 1_16.txt, 1_17.txt, 1_18.txt, 1_19.txt, 1_20.txt, 1_21.txt, 1_22.txt, 1_23.txt, 1_24.txt, 1_25.txt, 1_26.txt, 1_27.txt, 1_28.txt, 1_29.txt |
All | 0_00.txt, 0_01.txt, 0_02.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt, 1_12.txt, 1_13.txt, 1_14.txt, 1_15.txt, 1_16.txt, 1_17.txt, 1_18.txt, 1_19.txt, 1_20.txt, 1_21.txt, 1_22.txt, 1_23.txt, 1_24.txt, 1_25.txt, 1_26.txt, 1_27.txt, 1_28.txt, 1_29.txt, 2_00.txt, 2_01.txt, 2_02.txt, 2_03.txt, 2_04.txt, 2_05.txt, 2_06.txt, 2_07.txt, 2_08.txt, 2_09.txt, 2_10.txt, 2_11.txt, 2_12.txt, 2_13.txt, 2_14.txt, 2_15.txt, 2_16.txt, 2_17.txt, 2_18.txt, 2_19.txt, 2_20.txt, 2_21.txt, 2_22.txt, 2_23.txt, 2_24.txt, 2_25.txt, 2_26.txt, 2_27.txt, 2_28.txt, 2_29.txt, 2_30.txt, 2_31.txt, 2_32.txt, 2_33.txt, 2_34.txt, 2_35.txt, 2_36.txt, 2_37.txt, 2_38.txt, 2_39.txt, 2_40.txt, 2_41.txt, 2_42.txt, 2_43.txt, 2_44.txt, 2_45.txt, 2_46.txt, 2_47.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
0_00.txt | AC | 5 ms | 14592 KB |
0_01.txt | AC | 5 ms | 14592 KB |
0_02.txt | AC | 5 ms | 14592 KB |
1_00.txt | AC | 5 ms | 14592 KB |
1_01.txt | AC | 176 ms | 35200 KB |
1_02.txt | AC | 195 ms | 30080 KB |
1_03.txt | AC | 148 ms | 20992 KB |
1_04.txt | AC | 108 ms | 21240 KB |
1_05.txt | AC | 88 ms | 23668 KB |
1_06.txt | AC | 121 ms | 21120 KB |
1_07.txt | AC | 118 ms | 21120 KB |
1_08.txt | AC | 121 ms | 22272 KB |
1_09.txt | AC | 130 ms | 28032 KB |
1_10.txt | AC | 115 ms | 27008 KB |
1_11.txt | AC | 140 ms | 34944 KB |
1_12.txt | AC | 106 ms | 24192 KB |
1_13.txt | AC | 136 ms | 27520 KB |
1_14.txt | AC | 126 ms | 23808 KB |
1_15.txt | AC | 118 ms | 22528 KB |
1_16.txt | AC | 154 ms | 24832 KB |
1_17.txt | AC | 136 ms | 26496 KB |
1_18.txt | AC | 119 ms | 20864 KB |
1_19.txt | AC | 110 ms | 20992 KB |
1_20.txt | AC | 118 ms | 20992 KB |
1_21.txt | AC | 116 ms | 21888 KB |
1_22.txt | AC | 113 ms | 21116 KB |
1_23.txt | AC | 101 ms | 21116 KB |
1_24.txt | AC | 121 ms | 22016 KB |
1_25.txt | AC | 105 ms | 23416 KB |
1_26.txt | AC | 116 ms | 20988 KB |
1_27.txt | AC | 107 ms | 21240 KB |
1_28.txt | AC | 106 ms | 23800 KB |
1_29.txt | AC | 120 ms | 24316 KB |
2_00.txt | AC | 5 ms | 14592 KB |
2_01.txt | AC | 167 ms | 34560 KB |
2_02.txt | AC | 152 ms | 32384 KB |
2_03.txt | AC | 162 ms | 31616 KB |
2_04.txt | AC | 127 ms | 27776 KB |
2_05.txt | AC | 151 ms | 28032 KB |
2_06.txt | AC | 139 ms | 29056 KB |
2_07.txt | AC | 143 ms | 20864 KB |
2_08.txt | AC | 132 ms | 20992 KB |
2_09.txt | AC | 140 ms | 20864 KB |
2_10.txt | AC | 115 ms | 21240 KB |
2_11.txt | AC | 103 ms | 21240 KB |
2_12.txt | AC | 121 ms | 21240 KB |
2_13.txt | AC | 86 ms | 23668 KB |
2_14.txt | AC | 89 ms | 23668 KB |
2_15.txt | AC | 83 ms | 23668 KB |
2_16.txt | AC | 110 ms | 21120 KB |
2_17.txt | AC | 113 ms | 21120 KB |
2_18.txt | AC | 118 ms | 21120 KB |
2_19.txt | AC | 122 ms | 21120 KB |
2_20.txt | AC | 109 ms | 21120 KB |
2_21.txt | AC | 117 ms | 21120 KB |
2_22.txt | AC | 142 ms | 22144 KB |
2_23.txt | AC | 135 ms | 22784 KB |
2_24.txt | AC | 135 ms | 22528 KB |
2_25.txt | AC | 126 ms | 28544 KB |
2_26.txt | AC | 133 ms | 27136 KB |
2_27.txt | AC | 155 ms | 28544 KB |
2_28.txt | AC | 129 ms | 26496 KB |
2_29.txt | AC | 167 ms | 32896 KB |
2_30.txt | AC | 154 ms | 30848 KB |
2_31.txt | AC | 163 ms | 26624 KB |
2_32.txt | AC | 108 ms | 21504 KB |
2_33.txt | AC | 110 ms | 24064 KB |
2_34.txt | AC | 121 ms | 26112 KB |
2_35.txt | AC | 138 ms | 29440 KB |
2_36.txt | AC | 119 ms | 20864 KB |
2_37.txt | AC | 121 ms | 20992 KB |
2_38.txt | AC | 113 ms | 22272 KB |
2_39.txt | AC | 111 ms | 21120 KB |
2_40.txt | AC | 107 ms | 21112 KB |
2_41.txt | AC | 125 ms | 21036 KB |
2_42.txt | AC | 116 ms | 21112 KB |
2_43.txt | AC | 144 ms | 27776 KB |
2_44.txt | AC | 111 ms | 21240 KB |
2_45.txt | AC | 102 ms | 23544 KB |
2_46.txt | AC | 95 ms | 23796 KB |
2_47.txt | AC | 126 ms | 25208 KB |