Submission #2100594
Source Code Expand
#include<bits/stdc++.h> using namespace std ; const int MAXN = 2000 + 100 ; int n , k , res , dp[MAXN] , ans = MAXN; vector<int>adj[MAXN] ; void dfs(int u , int par=-1 , int h=0 ) { if(h>(k/2)) res++ ; if(k%2 == 1 && h == (k/2)+1) dp[u] ++ ; for(auto v : adj[u]) { if(v == par) continue ; dfs(v , u , h+1) ; dp[u] += dp[v] ; } } int main() { cin >> n >> k ; for(int i=0 ; i<n-1 ; i++) { int u , v ; cin >> u >> v ; u-- , v-- ; adj[u].push_back(v) ; adj[v].push_back(u) ; } for(int i=0 ; i<n ;i++) { dfs(i) ; if(k%2 == 1) { int mx = 0 ; for(auto x : adj[i]) { mx = max(mx , dp[x]) ; } res-=mx; } ans= min(ans , res) ; res = 0 ; for(int j=0 ; j<n ; j++) dp[j] = 0 ; } cout << ans << endl ; }
Submission Info
Submission Time | |
---|---|
Task | C - Shorten Diameter |
User | vjudge4 |
Language | Bash (GNU bash v4.3.11) |
Score | 0 |
Code Size | 1008 Byte |
Status | RE |
Exec Time | 148 ms |
Memory | 1692 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 600 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | sample-01.txt, sample-02.txt |
All | 000.txt, 001.txt, 002.txt, 003.txt, 004.txt, 005.txt, 006.txt, 007.txt, 008.txt, 009.txt, 010.txt, 011.txt, 012.txt, 013.txt, 014.txt, 015.txt, 016.txt, 017.txt, 018.txt, 019.txt, 020.txt, 021.txt, 022.txt, 023.txt, 024.txt, 025.txt, 026.txt, 027.txt, 028.txt, 029.txt, 030.txt, 031.txt, sample-01.txt, sample-02.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
000.txt | RE | 148 ms | 1692 KB |
001.txt | RE | 4 ms | 652 KB |
002.txt | RE | 4 ms | 548 KB |
003.txt | RE | 4 ms | 552 KB |
004.txt | RE | 4 ms | 648 KB |
005.txt | RE | 4 ms | 544 KB |
006.txt | RE | 4 ms | 548 KB |
007.txt | RE | 4 ms | 552 KB |
008.txt | RE | 4 ms | 544 KB |
009.txt | RE | 4 ms | 548 KB |
010.txt | RE | 4 ms | 548 KB |
011.txt | RE | 4 ms | 644 KB |
012.txt | RE | 4 ms | 552 KB |
013.txt | RE | 4 ms | 544 KB |
014.txt | RE | 4 ms | 548 KB |
015.txt | RE | 4 ms | 540 KB |
016.txt | RE | 4 ms | 544 KB |
017.txt | RE | 4 ms | 552 KB |
018.txt | RE | 3 ms | 548 KB |
019.txt | RE | 4 ms | 540 KB |
020.txt | RE | 4 ms | 540 KB |
021.txt | RE | 4 ms | 648 KB |
022.txt | RE | 4 ms | 544 KB |
023.txt | RE | 4 ms | 544 KB |
024.txt | RE | 4 ms | 544 KB |
025.txt | RE | 4 ms | 540 KB |
026.txt | RE | 4 ms | 648 KB |
027.txt | RE | 4 ms | 540 KB |
028.txt | RE | 4 ms | 544 KB |
029.txt | RE | 3 ms | 548 KB |
030.txt | RE | 4 ms | 552 KB |
031.txt | RE | 3 ms | 548 KB |
sample-01.txt | RE | 3 ms | 552 KB |
sample-02.txt | RE | 3 ms | 544 KB |