oj.uz

답안 #776904

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
776904 2023-07-08T11:33:06 Z TimDee 경주 (Race) (IOI11_race) C++17
100 / 100
 356 ms 81868 KB 
#include "race.h"
#include <bits/stdc++.h>
using namespace std;
#define forn(i,n) for(int i=0;i<n;++i)
#define pi pair<int,int>
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(), x.end()

const int inf=1e9;
int ans=inf;
const int N=2e5+5;
map<int,int> z[N];
int add1[N], add2[N];

vector<pi> adj[N];
int k;

void dfs(int u, int p) {
  z[u][0]=0;
  for(auto&e:adj[u]) {
    int v=e.f, w=e.s;
    if (v==p) continue;
    dfs(v,u);
    add1[v]++; add2[v]+=w;
    if (z[v].size()>z[u].size()) {
      swap(z[u],z[v]);
      swap(add1[u],add1[v]);
      swap(add2[u],add2[v]);
    }
    for(auto&it:z[v]) {
      int x=it.f, y=it.s;
      //x + add2[v] + add2[u] + len = k
      if (z[u].count(k-x-add2[v]-add2[u])) {
        ans=min(ans,z[u][k-x-add2[v]-add2[u]]+add1[u]+add1[v]+y);
      }
    }
    for(auto&it:z[v]) {
      int x=it.f, y=it.s;
      if (z[u].count(x+add2[v]-add2[u])) {
        z[u][x+add2[v]-add2[u]]=min(z[u][x+add2[v]-add2[u]],y+add1[v]-add1[u]);
      } else {
        z[u][x+add2[v]-add2[u]]=y+add1[v]-add1[u];
      }
    }
  }
}

int best_path(int n, int _k, int h[][2], int l[]) {
  k=_k;
  forn(i,n-1) {
    int u=h[i][0], v=h[i][1];
    adj[u].pb({v,l[i]}); adj[v].pb({u,l[i]});
  }
  dfs(0,-1);
  if (ans==inf) return -1;
  else return ans;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 14368 KB Output is correct
2 Correct 6 ms 14352 KB Output is correct
3 Correct 6 ms 14420 KB Output is correct
4 Correct 6 ms 14420 KB Output is correct
5 Correct 6 ms 14420 KB Output is correct
6 Correct 6 ms 14420 KB Output is correct
7 Correct 6 ms 14408 KB Output is correct
8 Correct 6 ms 14420 KB Output is correct
9 Correct 7 ms 14404 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 6 ms 14420 KB Output is correct
12 Correct 6 ms 14420 KB Output is correct
13 Correct 6 ms 14420 KB Output is correct
14 Correct 6 ms 14420 KB Output is correct
15 Correct 6 ms 14420 KB Output is correct
16 Correct 7 ms 14420 KB Output is correct
17 Correct 6 ms 14408 KB Output is correct
18 Correct 7 ms 14404 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 14368 KB Output is correct
2 Correct 6 ms 14352 KB Output is correct
3 Correct 6 ms 14420 KB Output is correct
4 Correct 6 ms 14420 KB Output is correct
5 Correct 6 ms 14420 KB Output is correct
6 Correct 6 ms 14420 KB Output is correct
7 Correct 6 ms 14408 KB Output is correct
8 Correct 6 ms 14420 KB Output is correct
9 Correct 7 ms 14404 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 6 ms 14420 KB Output is correct
12 Correct 6 ms 14420 KB Output is correct
13 Correct 6 ms 14420 KB Output is correct
14 Correct 6 ms 14420 KB Output is correct
15 Correct 6 ms 14420 KB Output is correct
16 Correct 7 ms 14420 KB Output is correct
17 Correct 6 ms 14408 KB Output is correct
18 Correct 7 ms 14404 KB Output is correct
19 Correct 6 ms 14408 KB Output is correct
20 Correct 6 ms 14404 KB Output is correct
21 Correct 7 ms 14540 KB Output is correct
22 Correct 7 ms 14676 KB Output is correct
23 Correct 7 ms 14676 KB Output is correct
24 Correct 7 ms 14548 KB Output is correct
25 Correct 7 ms 14624 KB Output is correct
26 Correct 7 ms 14676 KB Output is correct
27 Correct 7 ms 14548 KB Output is correct
28 Correct 7 ms 14548 KB Output is correct
29 Correct 7 ms 14676 KB Output is correct
30 Correct 7 ms 14676 KB Output is correct
31 Correct 7 ms 14676 KB Output is correct
32 Correct 7 ms 14548 KB Output is correct
33 Correct 7 ms 14676 KB Output is correct
34 Correct 7 ms 14548 KB Output is correct
35 Correct 7 ms 14540 KB Output is correct
36 Correct 7 ms 14616 KB Output is correct
37 Correct 9 ms 14592 KB Output is correct
38 Correct 7 ms 14548 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 14368 KB Output is correct
2 Correct 6 ms 14352 KB Output is correct
3 Correct 6 ms 14420 KB Output is correct
4 Correct 6 ms 14420 KB Output is correct
5 Correct 6 ms 14420 KB Output is correct
6 Correct 6 ms 14420 KB Output is correct
7 Correct 6 ms 14408 KB Output is correct
8 Correct 6 ms 14420 KB Output is correct
9 Correct 7 ms 14404 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 6 ms 14420 KB Output is correct
12 Correct 6 ms 14420 KB Output is correct
13 Correct 6 ms 14420 KB Output is correct
14 Correct 6 ms 14420 KB Output is correct
15 Correct 6 ms 14420 KB Output is correct
16 Correct 7 ms 14420 KB Output is correct
17 Correct 6 ms 14408 KB Output is correct
18 Correct 7 ms 14404 KB Output is correct
19 Correct 94 ms 32488 KB Output is correct
20 Correct 87 ms 32472 KB Output is correct
21 Correct 88 ms 32188 KB Output is correct
22 Correct 100 ms 32044 KB Output is correct
23 Correct 122 ms 41548 KB Output is correct
24 Correct 96 ms 34544 KB Output is correct
25 Correct 74 ms 33640 KB Output is correct
26 Correct 48 ms 40552 KB Output is correct
27 Correct 139 ms 40888 KB Output is correct
28 Correct 207 ms 75272 KB Output is correct
29 Correct 222 ms 73840 KB Output is correct
30 Correct 133 ms 40940 KB Output is correct
31 Correct 135 ms 40916 KB Output is correct
32 Correct 180 ms 41012 KB Output is correct
33 Correct 177 ms 44328 KB Output is correct
34 Correct 261 ms 68324 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 14368 KB Output is correct
2 Correct 6 ms 14352 KB Output is correct
3 Correct 6 ms 14420 KB Output is correct
4 Correct 6 ms 14420 KB Output is correct
5 Correct 6 ms 14420 KB Output is correct
6 Correct 6 ms 14420 KB Output is correct
7 Correct 6 ms 14408 KB Output is correct
8 Correct 6 ms 14420 KB Output is correct
9 Correct 7 ms 14404 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 6 ms 14420 KB Output is correct
12 Correct 6 ms 14420 KB Output is correct
13 Correct 6 ms 14420 KB Output is correct
14 Correct 6 ms 14420 KB Output is correct
15 Correct 6 ms 14420 KB Output is correct
16 Correct 7 ms 14420 KB Output is correct
17 Correct 6 ms 14408 KB Output is correct
18 Correct 7 ms 14404 KB Output is correct
19 Correct 6 ms 14408 KB Output is correct
20 Correct 6 ms 14404 KB Output is correct
21 Correct 7 ms 14540 KB Output is correct
22 Correct 7 ms 14676 KB Output is correct
23 Correct 7 ms 14676 KB Output is correct
24 Correct 7 ms 14548 KB Output is correct
25 Correct 7 ms 14624 KB Output is correct
26 Correct 7 ms 14676 KB Output is correct
27 Correct 7 ms 14548 KB Output is correct
28 Correct 7 ms 14548 KB Output is correct
29 Correct 7 ms 14676 KB Output is correct
30 Correct 7 ms 14676 KB Output is correct
31 Correct 7 ms 14676 KB Output is correct
32 Correct 7 ms 14548 KB Output is correct
33 Correct 7 ms 14676 KB Output is correct
34 Correct 7 ms 14548 KB Output is correct
35 Correct 7 ms 14540 KB Output is correct
36 Correct 7 ms 14616 KB Output is correct
37 Correct 9 ms 14592 KB Output is correct
38 Correct 7 ms 14548 KB Output is correct
39 Correct 94 ms 32488 KB Output is correct
40 Correct 87 ms 32472 KB Output is correct
41 Correct 88 ms 32188 KB Output is correct
42 Correct 100 ms 32044 KB Output is correct
43 Correct 122 ms 41548 KB Output is correct
44 Correct 96 ms 34544 KB Output is correct
45 Correct 74 ms 33640 KB Output is correct
46 Correct 48 ms 40552 KB Output is correct
47 Correct 139 ms 40888 KB Output is correct
48 Correct 207 ms 75272 KB Output is correct
49 Correct 222 ms 73840 KB Output is correct
50 Correct 133 ms 40940 KB Output is correct
51 Correct 135 ms 40916 KB Output is correct
52 Correct 180 ms 41012 KB Output is correct
53 Correct 177 ms 44328 KB Output is correct
54 Correct 261 ms 68324 KB Output is correct
55 Correct 17 ms 16980 KB Output is correct
56 Correct 12 ms 15956 KB Output is correct
57 Correct 58 ms 30576 KB Output is correct
58 Correct 44 ms 25664 KB Output is correct
59 Correct 74 ms 45184 KB Output is correct
60 Correct 211 ms 74188 KB Output is correct
61 Correct 160 ms 43420 KB Output is correct
62 Correct 132 ms 40916 KB Output is correct
63 Correct 172 ms 40976 KB Output is correct
64 Correct 356 ms 81868 KB Output is correct
65 Correct 351 ms 80288 KB Output is correct
66 Correct 221 ms 70012 KB Output is correct
67 Correct 142 ms 36516 KB Output is correct
68 Correct 257 ms 53264 KB Output is correct
69 Correct 286 ms 57036 KB Output is correct
70 Correct 239 ms 51656 KB Output is correct