Submission #1350857
Source Code Expand
#include <bits/stdc++.h> using namespace std; const int INF=1e9; int n,x,cnt; int h[105]; vector<int> v[105]; bool dfs(int x,int y){ if(v[x].size()==1){ if(h[x]){ cnt++; return 1; } return 0; } for(int i=0; i<v[x].size(); i++){ if(v[x][i]==y) continue; if(dfs(v[x][i],x)){ if(!h[x]){ cnt++; } } } if(h[x]){ cnt++; return 1; } else return 0; } int main(){ cin>>n>>x; x--; for(int i=0; i<n; i++) scanf("%d",&h[i]); for(int i=0; i<n-1; i++){ int a,b; scanf("%d %d",&a,&b); a--; b--; v[a].push_back(b); v[b].push_back(a); } v[x].push_back(-1); dfs(x,-1); cout<<2*(cnt-1)<<endl; }
Submission Info
Submission Time | |
---|---|
Task | B - ツリーグラフ |
User | momotaro1303 |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 813 Byte |
Status | WA |
Exec Time | 1 ms |
Memory | 256 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:37:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i=0; i<n; i++) scanf("%d",&h[i]); ^ ./Main.cpp:40:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int a,b; scanf("%d %d",&a,&b); a--; b--; ^
Judge Result
Set Name | Sample | All | ||||||
---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 100 | ||||||
Status |
|
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Set Name | Test Cases |
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Sample | subtask0_sample_01.txt, subtask0_sample_02.txt |
All | subtask0_sample_01.txt, subtask0_sample_02.txt, subtask1_line01.txt, subtask1_line02.txt, subtask1_line03.txt, subtask1_line04.txt, subtask1_line05.txt, subtask1_line06.txt, subtask1_random01.txt, subtask1_random02.txt, subtask1_random03.txt, subtask1_random04.txt, subtask1_random05.txt, subtask1_random06.txt, subtask1_random07.txt, subtask1_random08.txt, subtask1_special01.txt, subtask1_special02.txt, subtask1_special03.txt, subtask1_special04.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
subtask0_sample_01.txt | AC | 1 ms | 256 KB |
subtask0_sample_02.txt | AC | 1 ms | 256 KB |
subtask1_line01.txt | AC | 1 ms | 256 KB |
subtask1_line02.txt | WA | 1 ms | 256 KB |
subtask1_line03.txt | WA | 1 ms | 256 KB |
subtask1_line04.txt | WA | 1 ms | 256 KB |
subtask1_line05.txt | AC | 1 ms | 256 KB |
subtask1_line06.txt | WA | 1 ms | 256 KB |
subtask1_random01.txt | WA | 1 ms | 256 KB |
subtask1_random02.txt | WA | 1 ms | 256 KB |
subtask1_random03.txt | AC | 1 ms | 256 KB |
subtask1_random04.txt | WA | 1 ms | 256 KB |
subtask1_random05.txt | AC | 1 ms | 256 KB |
subtask1_random06.txt | WA | 1 ms | 256 KB |
subtask1_random07.txt | WA | 1 ms | 256 KB |
subtask1_random08.txt | WA | 1 ms | 256 KB |
subtask1_special01.txt | AC | 1 ms | 256 KB |
subtask1_special02.txt | WA | 1 ms | 256 KB |
subtask1_special03.txt | AC | 1 ms | 256 KB |
subtask1_special04.txt | AC | 1 ms | 256 KB |