oj.uz

Submission #776869

# Submission time Handle Problem Language Result Execution time Memory
776869 2023-07-08T10:55:12 Z I_Love_EliskaM_ Race (IOI11_race) C++14
100 / 100
 424 ms 84628 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

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 7 ms 14400 KB Output is correct
4 Correct 6 ms 14408 KB Output is correct
5 Correct 7 ms 14348 KB Output is correct
6 Correct 6 ms 14420 KB Output is correct
7 Correct 7 ms 14408 KB Output is correct
8 Correct 7 ms 14420 KB Output is correct
9 Correct 7 ms 14412 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 7 ms 14420 KB Output is correct
12 Correct 7 ms 14420 KB Output is correct
13 Correct 7 ms 14336 KB Output is correct
14 Correct 6 ms 14420 KB Output is correct
15 Correct 7 ms 14404 KB Output is correct
16 Correct 6 ms 14408 KB Output is correct
17 Correct 7 ms 14404 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 7 ms 14400 KB Output is correct
4 Correct 6 ms 14408 KB Output is correct
5 Correct 7 ms 14348 KB Output is correct
6 Correct 6 ms 14420 KB Output is correct
7 Correct 7 ms 14408 KB Output is correct
8 Correct 7 ms 14420 KB Output is correct
9 Correct 7 ms 14412 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 7 ms 14420 KB Output is correct
12 Correct 7 ms 14420 KB Output is correct
13 Correct 7 ms 14336 KB Output is correct
14 Correct 6 ms 14420 KB Output is correct
15 Correct 7 ms 14404 KB Output is correct
16 Correct 6 ms 14408 KB Output is correct
17 Correct 7 ms 14404 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct
19 Correct 6 ms 14420 KB Output is correct
20 Correct 7 ms 14408 KB Output is correct
21 Correct 7 ms 14548 KB Output is correct
22 Correct 8 ms 14676 KB Output is correct
23 Correct 7 ms 14628 KB Output is correct
24 Correct 8 ms 14548 KB Output is correct
25 Correct 7 ms 14720 KB Output is correct
26 Correct 10 ms 14548 KB Output is correct
27 Correct 7 ms 14548 KB Output is correct
28 Correct 8 ms 14548 KB Output is correct
29 Correct 8 ms 14544 KB Output is correct
30 Correct 8 ms 14548 KB Output is correct
31 Correct 7 ms 14548 KB Output is correct
32 Correct 7 ms 14552 KB Output is correct
33 Correct 7 ms 14676 KB Output is correct
34 Correct 8 ms 14592 KB Output is correct
35 Correct 7 ms 14540 KB Output is correct
36 Correct 8 ms 14548 KB Output is correct
37 Correct 7 ms 14548 KB Output is correct
38 Correct 7 ms 14536 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 7 ms 14400 KB Output is correct
4 Correct 6 ms 14408 KB Output is correct
5 Correct 7 ms 14348 KB Output is correct
6 Correct 6 ms 14420 KB Output is correct
7 Correct 7 ms 14408 KB Output is correct
8 Correct 7 ms 14420 KB Output is correct
9 Correct 7 ms 14412 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 7 ms 14420 KB Output is correct
12 Correct 7 ms 14420 KB Output is correct
13 Correct 7 ms 14336 KB Output is correct
14 Correct 6 ms 14420 KB Output is correct
15 Correct 7 ms 14404 KB Output is correct
16 Correct 6 ms 14408 KB Output is correct
17 Correct 7 ms 14404 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct
19 Correct 117 ms 33000 KB Output is correct
20 Correct 109 ms 33056 KB Output is correct
21 Correct 90 ms 32844 KB Output is correct
22 Correct 98 ms 32628 KB Output is correct
23 Correct 142 ms 42208 KB Output is correct
24 Correct 121 ms 35112 KB Output is correct
25 Correct 87 ms 34304 KB Output is correct
26 Correct 49 ms 41192 KB Output is correct
27 Correct 141 ms 43100 KB Output is correct
28 Correct 214 ms 77644 KB Output is correct
29 Correct 221 ms 76036 KB Output is correct
30 Correct 150 ms 43096 KB Output is correct
31 Correct 148 ms 43084 KB Output is correct
32 Correct 191 ms 43208 KB Output is correct
33 Correct 196 ms 46544 KB Output is correct
34 Correct 292 ms 71456 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 7 ms 14400 KB Output is correct
4 Correct 6 ms 14408 KB Output is correct
5 Correct 7 ms 14348 KB Output is correct
6 Correct 6 ms 14420 KB Output is correct
7 Correct 7 ms 14408 KB Output is correct
8 Correct 7 ms 14420 KB Output is correct
9 Correct 7 ms 14412 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 7 ms 14420 KB Output is correct
12 Correct 7 ms 14420 KB Output is correct
13 Correct 7 ms 14336 KB Output is correct
14 Correct 6 ms 14420 KB Output is correct
15 Correct 7 ms 14404 KB Output is correct
16 Correct 6 ms 14408 KB Output is correct
17 Correct 7 ms 14404 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct
19 Correct 6 ms 14420 KB Output is correct
20 Correct 7 ms 14408 KB Output is correct
21 Correct 7 ms 14548 KB Output is correct
22 Correct 8 ms 14676 KB Output is correct
23 Correct 7 ms 14628 KB Output is correct
24 Correct 8 ms 14548 KB Output is correct
25 Correct 7 ms 14720 KB Output is correct
26 Correct 10 ms 14548 KB Output is correct
27 Correct 7 ms 14548 KB Output is correct
28 Correct 8 ms 14548 KB Output is correct
29 Correct 8 ms 14544 KB Output is correct
30 Correct 8 ms 14548 KB Output is correct
31 Correct 7 ms 14548 KB Output is correct
32 Correct 7 ms 14552 KB Output is correct
33 Correct 7 ms 14676 KB Output is correct
34 Correct 8 ms 14592 KB Output is correct
35 Correct 7 ms 14540 KB Output is correct
36 Correct 8 ms 14548 KB Output is correct
37 Correct 7 ms 14548 KB Output is correct
38 Correct 7 ms 14536 KB Output is correct
39 Correct 117 ms 33000 KB Output is correct
40 Correct 109 ms 33056 KB Output is correct
41 Correct 90 ms 32844 KB Output is correct
42 Correct 98 ms 32628 KB Output is correct
43 Correct 142 ms 42208 KB Output is correct
44 Correct 121 ms 35112 KB Output is correct
45 Correct 87 ms 34304 KB Output is correct
46 Correct 49 ms 41192 KB Output is correct
47 Correct 141 ms 43100 KB Output is correct
48 Correct 214 ms 77644 KB Output is correct
49 Correct 221 ms 76036 KB Output is correct
50 Correct 150 ms 43096 KB Output is correct
51 Correct 148 ms 43084 KB Output is correct
52 Correct 191 ms 43208 KB Output is correct
53 Correct 196 ms 46544 KB Output is correct
54 Correct 292 ms 71456 KB Output is correct
55 Correct 24 ms 16924 KB Output is correct
56 Correct 12 ms 15956 KB Output is correct
57 Correct 67 ms 31148 KB Output is correct
58 Correct 52 ms 26044 KB Output is correct
59 Correct 84 ms 45780 KB Output is correct
60 Correct 220 ms 76420 KB Output is correct
61 Correct 216 ms 45712 KB Output is correct
62 Correct 215 ms 43112 KB Output is correct
63 Correct 213 ms 43216 KB Output is correct
64 Correct 424 ms 84628 KB Output is correct
65 Correct 405 ms 83348 KB Output is correct
66 Correct 257 ms 72424 KB Output is correct
67 Correct 194 ms 39128 KB Output is correct
68 Correct 311 ms 56024 KB Output is correct
69 Correct 304 ms 59928 KB Output is correct
70 Correct 283 ms 54380 KB Output is correct