#include<iostream>
#include<vector>
#include<algorithm>
#include<bits/stdc++.h>
using namespace::std;
int delay[300005];
vector<vector<int>> v;
void DFS(int i,int d){
//cout<<i<<'\n';
delay[i]=d;
for(int a=0;a<v[i].end()-v[i].begin();a++){
//cout<<a<<'\n';
if(delay[a]==-1){
DFS(a,d+1);
}
}
}
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
//freopen("input.txt","r",stdin);
int n;
cin>>n;
for(int i=0;i<n+1;i++){
vector<int> t;
v.push_back(t);
}
for(int i=0,l,r;i<n-1;i++){
cin>>l>>r;
//delay[i+1]=-1;
v[l].push_back(r);
v[r].push_back(l);
}
//delay[n]=-1;
DFS(1,0);
int maxn=0;
for(int i=1;i<=n;i++){
//cout<<i<<' '<<v[i].end()-v[i].begin()-delay[i]<<'\n';
maxn=max(maxn,(int)(v[i].end()-v[i].begin()-delay[i])-1);
}
cout<<maxn<<'\n';
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
2 ms |
500 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
2 ms |
548 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
2 ms |
600 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
6 ms |
1124 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
16 ms |
2244 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
57 ms |
6236 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
161 ms |
12052 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
270 ms |
17620 KB |
Output isn't correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
257 ms |
17620 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |