oj.uz

답안 #1084283

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1084283 2024-09-05T18:16:58 Z EkinOnal 경주 (Race) (IOI11_race) C++17
100 / 100
 338 ms 37716 KB 
#include "race.h"
#include <bits/stdc++.h>
using namespace std;

#define MAX 200000
#define pb push_back
#define mp make_pair 
#define f first
#define s second
#define vi vector<int>
#define pii pair<int,int>
#define si set<int>
#define vpii vector<pair<int,int>> 
const int mod = 1e9+7;
const int INF = 1e9;

int n,k,cev;
vpii adj[MAX];
vi dead(MAX),sz(MAX),mpp(1e6+5);

void dfs(int node,int par){
  sz[node]=1;
  for(auto u : adj[node]){
    if(dead[u.f] || u.f==par) continue;
    dfs(u.f,node);
    sz[node]+=sz[u.f];
  }
}

int findc(int node,int par,int val){
  for(auto u : adj[node]){
    if(dead[u.f] || u.f==par) continue;
    if(sz[u.f]>=val/2) return findc(u.f,node,val); // val olmalidir
  }
  return node;
}

void check(int node,int par,int len,int sayi){
  if(len>k) return;
  if(mpp[k-len]!=INF) cev=min(cev,mpp[k-len]+sayi);
  for(auto u : adj[node]){
    if(dead[u.f] || u.f==par) continue;
    check(u.f,node,len+u.s,sayi+1);
  }
}

void build(int node,int par,int len,int sayi){
  if(len>k) return;
//  if(mpp[len]==INF) mpp[len]=sayi;
  mpp[len]=min(mpp[len],sayi);
  for(auto u : adj[node]){
    if(dead[u.f] || u.f==par) continue;
    build(u.f,node,len+u.s,sayi+1);
  }
}

void sifirla(int node,int par,int der){
  if(der>k) return;
  mpp[der]=INF;
  for(auto u : adj[node]){
    if(dead[u.f] || u.f==par) continue;
    sifirla(u.f,node,der+u.s);
  }
}

void solve(int node){
  dfs(node,node);
  int x = findc(node,node,sz[node]);
  dead[x]=true;
  mpp[0]=0;
  for(auto u : adj[x]){
    if(dead[u.f]) continue;
    check(u.f,x,u.s,1);
    build(u.f,x,u.s,1);
  }
   for(auto u : adj[x]){
    if(dead[u.f]) continue;
    sifirla(u.f,x,u.s);
  }

  for(auto u : adj[x]){
    if(dead[u.f]) continue;
    solve(u.f);
  }

}


int best_path(int N, int K, int H[][2], int L[])
{
  n=N,k=K;
  for(int i=0;i<n-1;i++){
    adj[H[i][0]].pb({H[i][1],L[i]});
    adj[H[i][1]].pb({H[i][0],L[i]});
  }
  fill(mpp.begin(),mpp.end(),INF);

  cev=n+2;
  solve(0);
  if(cev==n+2) cev=-1;
  return cev;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 10584 KB Output is correct
2 Correct 5 ms 10588 KB Output is correct
3 Correct 4 ms 10572 KB Output is correct
4 Correct 5 ms 10588 KB Output is correct
5 Correct 5 ms 10584 KB Output is correct
6 Correct 5 ms 10588 KB Output is correct
7 Correct 6 ms 10560 KB Output is correct
8 Correct 7 ms 10588 KB Output is correct
9 Correct 5 ms 10588 KB Output is correct
10 Correct 5 ms 10588 KB Output is correct
11 Correct 6 ms 10584 KB Output is correct
12 Correct 5 ms 10588 KB Output is correct
13 Correct 5 ms 10588 KB Output is correct
14 Correct 5 ms 10584 KB Output is correct
15 Correct 7 ms 10644 KB Output is correct
16 Correct 5 ms 10588 KB Output is correct
17 Correct 5 ms 10588 KB Output is correct
18 Correct 5 ms 10588 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 10584 KB Output is correct
2 Correct 5 ms 10588 KB Output is correct
3 Correct 4 ms 10572 KB Output is correct
4 Correct 5 ms 10588 KB Output is correct
5 Correct 5 ms 10584 KB Output is correct
6 Correct 5 ms 10588 KB Output is correct
7 Correct 6 ms 10560 KB Output is correct
8 Correct 7 ms 10588 KB Output is correct
9 Correct 5 ms 10588 KB Output is correct
10 Correct 5 ms 10588 KB Output is correct
11 Correct 6 ms 10584 KB Output is correct
12 Correct 5 ms 10588 KB Output is correct
13 Correct 5 ms 10588 KB Output is correct
14 Correct 5 ms 10584 KB Output is correct
15 Correct 7 ms 10644 KB Output is correct
16 Correct 5 ms 10588 KB Output is correct
17 Correct 5 ms 10588 KB Output is correct
18 Correct 5 ms 10588 KB Output is correct
19 Correct 7 ms 10584 KB Output is correct
20 Correct 8 ms 10588 KB Output is correct
21 Correct 6 ms 10588 KB Output is correct
22 Correct 5 ms 10584 KB Output is correct
23 Correct 6 ms 10584 KB Output is correct
24 Correct 5 ms 10588 KB Output is correct
25 Correct 5 ms 10588 KB Output is correct
26 Correct 5 ms 10588 KB Output is correct
27 Correct 6 ms 10584 KB Output is correct
28 Correct 5 ms 10588 KB Output is correct
29 Correct 5 ms 10588 KB Output is correct
30 Correct 5 ms 10588 KB Output is correct
31 Correct 5 ms 10588 KB Output is correct
32 Correct 6 ms 10584 KB Output is correct
33 Correct 5 ms 10588 KB Output is correct
34 Correct 5 ms 10624 KB Output is correct
35 Correct 5 ms 10588 KB Output is correct
36 Correct 5 ms 10516 KB Output is correct
37 Correct 6 ms 10588 KB Output is correct
38 Correct 6 ms 10588 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 10584 KB Output is correct
2 Correct 5 ms 10588 KB Output is correct
3 Correct 4 ms 10572 KB Output is correct
4 Correct 5 ms 10588 KB Output is correct
5 Correct 5 ms 10584 KB Output is correct
6 Correct 5 ms 10588 KB Output is correct
7 Correct 6 ms 10560 KB Output is correct
8 Correct 7 ms 10588 KB Output is correct
9 Correct 5 ms 10588 KB Output is correct
10 Correct 5 ms 10588 KB Output is correct
11 Correct 6 ms 10584 KB Output is correct
12 Correct 5 ms 10588 KB Output is correct
13 Correct 5 ms 10588 KB Output is correct
14 Correct 5 ms 10584 KB Output is correct
15 Correct 7 ms 10644 KB Output is correct
16 Correct 5 ms 10588 KB Output is correct
17 Correct 5 ms 10588 KB Output is correct
18 Correct 5 ms 10588 KB Output is correct
19 Correct 100 ms 16724 KB Output is correct
20 Correct 90 ms 16720 KB Output is correct
21 Correct 100 ms 16732 KB Output is correct
22 Correct 95 ms 16732 KB Output is correct
23 Correct 51 ms 16980 KB Output is correct
24 Correct 49 ms 16976 KB Output is correct
25 Correct 97 ms 20560 KB Output is correct
26 Correct 77 ms 23920 KB Output is correct
27 Correct 103 ms 23444 KB Output is correct
28 Correct 178 ms 37716 KB Output is correct
29 Correct 161 ms 36732 KB Output is correct
30 Correct 111 ms 23380 KB Output is correct
31 Correct 106 ms 23380 KB Output is correct
32 Correct 131 ms 23556 KB Output is correct
33 Correct 145 ms 22096 KB Output is correct
34 Correct 117 ms 23184 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 10584 KB Output is correct
2 Correct 5 ms 10588 KB Output is correct
3 Correct 4 ms 10572 KB Output is correct
4 Correct 5 ms 10588 KB Output is correct
5 Correct 5 ms 10584 KB Output is correct
6 Correct 5 ms 10588 KB Output is correct
7 Correct 6 ms 10560 KB Output is correct
8 Correct 7 ms 10588 KB Output is correct
9 Correct 5 ms 10588 KB Output is correct
10 Correct 5 ms 10588 KB Output is correct
11 Correct 6 ms 10584 KB Output is correct
12 Correct 5 ms 10588 KB Output is correct
13 Correct 5 ms 10588 KB Output is correct
14 Correct 5 ms 10584 KB Output is correct
15 Correct 7 ms 10644 KB Output is correct
16 Correct 5 ms 10588 KB Output is correct
17 Correct 5 ms 10588 KB Output is correct
18 Correct 5 ms 10588 KB Output is correct
19 Correct 7 ms 10584 KB Output is correct
20 Correct 8 ms 10588 KB Output is correct
21 Correct 6 ms 10588 KB Output is correct
22 Correct 5 ms 10584 KB Output is correct
23 Correct 6 ms 10584 KB Output is correct
24 Correct 5 ms 10588 KB Output is correct
25 Correct 5 ms 10588 KB Output is correct
26 Correct 5 ms 10588 KB Output is correct
27 Correct 6 ms 10584 KB Output is correct
28 Correct 5 ms 10588 KB Output is correct
29 Correct 5 ms 10588 KB Output is correct
30 Correct 5 ms 10588 KB Output is correct
31 Correct 5 ms 10588 KB Output is correct
32 Correct 6 ms 10584 KB Output is correct
33 Correct 5 ms 10588 KB Output is correct
34 Correct 5 ms 10624 KB Output is correct
35 Correct 5 ms 10588 KB Output is correct
36 Correct 5 ms 10516 KB Output is correct
37 Correct 6 ms 10588 KB Output is correct
38 Correct 6 ms 10588 KB Output is correct
39 Correct 100 ms 16724 KB Output is correct
40 Correct 90 ms 16720 KB Output is correct
41 Correct 100 ms 16732 KB Output is correct
42 Correct 95 ms 16732 KB Output is correct
43 Correct 51 ms 16980 KB Output is correct
44 Correct 49 ms 16976 KB Output is correct
45 Correct 97 ms 20560 KB Output is correct
46 Correct 77 ms 23920 KB Output is correct
47 Correct 103 ms 23444 KB Output is correct
48 Correct 178 ms 37716 KB Output is correct
49 Correct 161 ms 36732 KB Output is correct
50 Correct 111 ms 23380 KB Output is correct
51 Correct 106 ms 23380 KB Output is correct
52 Correct 131 ms 23556 KB Output is correct
53 Correct 145 ms 22096 KB Output is correct
54 Correct 117 ms 23184 KB Output is correct
55 Correct 12 ms 11220 KB Output is correct
56 Correct 12 ms 11100 KB Output is correct
57 Correct 51 ms 17056 KB Output is correct
58 Correct 26 ms 16584 KB Output is correct
59 Correct 77 ms 24076 KB Output is correct
60 Correct 338 ms 36796 KB Output is correct
61 Correct 117 ms 23380 KB Output is correct
62 Correct 163 ms 23376 KB Output is correct
63 Correct 157 ms 23376 KB Output is correct
64 Correct 311 ms 23732 KB Output is correct
65 Correct 144 ms 24144 KB Output is correct
66 Correct 253 ms 34128 KB Output is correct
67 Correct 78 ms 24040 KB Output is correct
68 Correct 152 ms 24144 KB Output is correct
69 Correct 148 ms 24404 KB Output is correct
70 Correct 147 ms 23556 KB Output is correct