oj.uz

Submission #701383

# Submission time Handle Problem Language Result Execution time Memory
701383 2023-02-21T06:29:59 Z mychecksedad Race (IOI11_race) C++17
100 / 100
 819 ms 71272 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int M = 1e6;
#define pb push_back

struct Edge{
  int to, e;
};

int n, k, ans, s[M];
vector<Edge> g[M];
vector<bool> vis;

int pre(int v, int p){
  s[v] = 1;
  for(Edge U: g[v]){
    int u = U.to;
    if(!vis[u] && u != p) pre(u, v), s[v] += s[u];
  }
  return s[v];
}

int centro(int v, int p, int sz){
  for(Edge U: g[v]){
    int u = U.to;
    if(u != p && !vis[u] && s[u] * 2 > sz)
      return centro(u, v, sz);
  }
  return v;
}

vector<pair<int, int>> ddd;
void dfs(int v, int p, map<int, int> &S, int d, int dd){
  ddd.pb({d, dd});
  if(d == k){
  	ans = min(ans, dd);
  }
  if(d <= k && S.find(k - d) != S.end())
  	ans = min(ans, dd + S[k - d]);
  for(Edge U: g[v]){
    int u = U.to;
    if(!vis[u] && u != p) 
    	dfs(u, v, S, min(d + U.e, 1000000000), dd + 1);
  }
}

void centroid(int v){
  int C = centro(v, 0, pre(v, 0));
  map<int, int> s; 
  for(Edge U: g[C]){
  	int u = U.to;
  	if(!vis[u]){
  		ddd.clear();
  		dfs(u, C, s, U.e, 1);
  		for(auto v: ddd) s[v.first] = s[v.first] == 0 ? v.second : min(s[v.first], v.second);
  	}
  }

  vis[C] = 1;

  for(Edge U: g[C]){
    int u = U.to;
    if(!vis[u]) 
      centroid(u);
  }
}

int best_path(int N, int K, int H[][2], int L[])
{
  n = N, k = K, ans = N + 1;
  for(int i = 0; i < n - 1; ++i){
    g[H[i][0] + 1].pb({H[i][1] + 1, L[i]});
    g[H[i][1] + 1].pb({H[i][0] + 1, L[i]});
  }
  vis.resize(n + 1);

  centroid(1);

  return (ans == N + 1 ? -1 : ans);
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23764 KB Output is correct
2 Correct 13 ms 23764 KB Output is correct
3 Correct 12 ms 23796 KB Output is correct
4 Correct 12 ms 23764 KB Output is correct
5 Correct 12 ms 23820 KB Output is correct
6 Correct 13 ms 23764 KB Output is correct
7 Correct 12 ms 23764 KB Output is correct
8 Correct 13 ms 23820 KB Output is correct
9 Correct 13 ms 23796 KB Output is correct
10 Correct 12 ms 23764 KB Output is correct
11 Correct 15 ms 23748 KB Output is correct
12 Correct 13 ms 23804 KB Output is correct
13 Correct 13 ms 23764 KB Output is correct
14 Correct 13 ms 23796 KB Output is correct
15 Correct 15 ms 23764 KB Output is correct
16 Correct 13 ms 23796 KB Output is correct
17 Correct 13 ms 23764 KB Output is correct
18 Correct 13 ms 23796 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23764 KB Output is correct
2 Correct 13 ms 23764 KB Output is correct
3 Correct 12 ms 23796 KB Output is correct
4 Correct 12 ms 23764 KB Output is correct
5 Correct 12 ms 23820 KB Output is correct
6 Correct 13 ms 23764 KB Output is correct
7 Correct 12 ms 23764 KB Output is correct
8 Correct 13 ms 23820 KB Output is correct
9 Correct 13 ms 23796 KB Output is correct
10 Correct 12 ms 23764 KB Output is correct
11 Correct 15 ms 23748 KB Output is correct
12 Correct 13 ms 23804 KB Output is correct
13 Correct 13 ms 23764 KB Output is correct
14 Correct 13 ms 23796 KB Output is correct
15 Correct 15 ms 23764 KB Output is correct
16 Correct 13 ms 23796 KB Output is correct
17 Correct 13 ms 23764 KB Output is correct
18 Correct 13 ms 23796 KB Output is correct
19 Correct 12 ms 23696 KB Output is correct
20 Correct 12 ms 23768 KB Output is correct
21 Correct 13 ms 23872 KB Output is correct
22 Correct 14 ms 23912 KB Output is correct
23 Correct 15 ms 23936 KB Output is correct
24 Correct 13 ms 23892 KB Output is correct
25 Correct 15 ms 23944 KB Output is correct
26 Correct 16 ms 23840 KB Output is correct
27 Correct 13 ms 23872 KB Output is correct
28 Correct 14 ms 23924 KB Output is correct
29 Correct 14 ms 23892 KB Output is correct
30 Correct 13 ms 23936 KB Output is correct
31 Correct 15 ms 23892 KB Output is correct
32 Correct 14 ms 23848 KB Output is correct
33 Correct 14 ms 23892 KB Output is correct
34 Correct 17 ms 23932 KB Output is correct
35 Correct 13 ms 23936 KB Output is correct
36 Correct 14 ms 23936 KB Output is correct
37 Correct 12 ms 23864 KB Output is correct
38 Correct 13 ms 23892 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23764 KB Output is correct
2 Correct 13 ms 23764 KB Output is correct
3 Correct 12 ms 23796 KB Output is correct
4 Correct 12 ms 23764 KB Output is correct
5 Correct 12 ms 23820 KB Output is correct
6 Correct 13 ms 23764 KB Output is correct
7 Correct 12 ms 23764 KB Output is correct
8 Correct 13 ms 23820 KB Output is correct
9 Correct 13 ms 23796 KB Output is correct
10 Correct 12 ms 23764 KB Output is correct
11 Correct 15 ms 23748 KB Output is correct
12 Correct 13 ms 23804 KB Output is correct
13 Correct 13 ms 23764 KB Output is correct
14 Correct 13 ms 23796 KB Output is correct
15 Correct 15 ms 23764 KB Output is correct
16 Correct 13 ms 23796 KB Output is correct
17 Correct 13 ms 23764 KB Output is correct
18 Correct 13 ms 23796 KB Output is correct
19 Correct 217 ms 30972 KB Output is correct
20 Correct 219 ms 30912 KB Output is correct
21 Correct 224 ms 30992 KB Output is correct
22 Correct 215 ms 31116 KB Output is correct
23 Correct 262 ms 31436 KB Output is correct
24 Correct 150 ms 30904 KB Output is correct
25 Correct 236 ms 36240 KB Output is correct
26 Correct 115 ms 38368 KB Output is correct
27 Correct 293 ms 37712 KB Output is correct
28 Correct 758 ms 71272 KB Output is correct
29 Correct 794 ms 70176 KB Output is correct
30 Correct 278 ms 37656 KB Output is correct
31 Correct 278 ms 37688 KB Output is correct
32 Correct 328 ms 37752 KB Output is correct
33 Correct 448 ms 37592 KB Output is correct
34 Correct 679 ms 54292 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23764 KB Output is correct
2 Correct 13 ms 23764 KB Output is correct
3 Correct 12 ms 23796 KB Output is correct
4 Correct 12 ms 23764 KB Output is correct
5 Correct 12 ms 23820 KB Output is correct
6 Correct 13 ms 23764 KB Output is correct
7 Correct 12 ms 23764 KB Output is correct
8 Correct 13 ms 23820 KB Output is correct
9 Correct 13 ms 23796 KB Output is correct
10 Correct 12 ms 23764 KB Output is correct
11 Correct 15 ms 23748 KB Output is correct
12 Correct 13 ms 23804 KB Output is correct
13 Correct 13 ms 23764 KB Output is correct
14 Correct 13 ms 23796 KB Output is correct
15 Correct 15 ms 23764 KB Output is correct
16 Correct 13 ms 23796 KB Output is correct
17 Correct 13 ms 23764 KB Output is correct
18 Correct 13 ms 23796 KB Output is correct
19 Correct 12 ms 23696 KB Output is correct
20 Correct 12 ms 23768 KB Output is correct
21 Correct 13 ms 23872 KB Output is correct
22 Correct 14 ms 23912 KB Output is correct
23 Correct 15 ms 23936 KB Output is correct
24 Correct 13 ms 23892 KB Output is correct
25 Correct 15 ms 23944 KB Output is correct
26 Correct 16 ms 23840 KB Output is correct
27 Correct 13 ms 23872 KB Output is correct
28 Correct 14 ms 23924 KB Output is correct
29 Correct 14 ms 23892 KB Output is correct
30 Correct 13 ms 23936 KB Output is correct
31 Correct 15 ms 23892 KB Output is correct
32 Correct 14 ms 23848 KB Output is correct
33 Correct 14 ms 23892 KB Output is correct
34 Correct 17 ms 23932 KB Output is correct
35 Correct 13 ms 23936 KB Output is correct
36 Correct 14 ms 23936 KB Output is correct
37 Correct 12 ms 23864 KB Output is correct
38 Correct 13 ms 23892 KB Output is correct
39 Correct 217 ms 30972 KB Output is correct
40 Correct 219 ms 30912 KB Output is correct
41 Correct 224 ms 30992 KB Output is correct
42 Correct 215 ms 31116 KB Output is correct
43 Correct 262 ms 31436 KB Output is correct
44 Correct 150 ms 30904 KB Output is correct
45 Correct 236 ms 36240 KB Output is correct
46 Correct 115 ms 38368 KB Output is correct
47 Correct 293 ms 37712 KB Output is correct
48 Correct 758 ms 71272 KB Output is correct
49 Correct 794 ms 70176 KB Output is correct
50 Correct 278 ms 37656 KB Output is correct
51 Correct 278 ms 37688 KB Output is correct
52 Correct 328 ms 37752 KB Output is correct
53 Correct 448 ms 37592 KB Output is correct
54 Correct 679 ms 54292 KB Output is correct
55 Correct 32 ms 25040 KB Output is correct
56 Correct 23 ms 24532 KB Output is correct
57 Correct 138 ms 31308 KB Output is correct
58 Correct 52 ms 30316 KB Output is correct
59 Correct 290 ms 45132 KB Output is correct
60 Correct 765 ms 68924 KB Output is correct
61 Correct 328 ms 38972 KB Output is correct
62 Correct 303 ms 37708 KB Output is correct
63 Correct 330 ms 37744 KB Output is correct
64 Correct 819 ms 49536 KB Output is correct
65 Correct 726 ms 55408 KB Output is correct
66 Correct 791 ms 67756 KB Output is correct
67 Correct 143 ms 38128 KB Output is correct
68 Correct 444 ms 50752 KB Output is correct
69 Correct 470 ms 51404 KB Output is correct
70 Correct 429 ms 49584 KB Output is correct