oj.uz

Submission #904804

# Submission time Handle Problem Language Result Execution time Memory
904804 2024-01-12T08:36:24 Z ALTAKEXE Race (IOI11_race) C++14
100 / 100
 346 ms 76652 KB 
#include "race.h"
#include "bits/stdc++.h"
#define MAXN 200009
#define INF 1000000007
#define mp(x, y) make_pair(x, y)
#define all(v) v.begin(), v.end()
#define pb(x) push_back(x)
#define ppb() pop_back()
#define tr(ii, c) for (__typeof((c).begin()) ii = (c).begin(); ii != (c).end(); ii++)
#define ff first
#define ss second
using namespace std;

typedef long long ll;
typedef pair<int, int> PII;
template <class T>
bool umin(T &a, T b)
{
  if (a > b)
  {
    a = b;
    return 1;
  }
  return 0;
}
template <class T>
bool umax(T &a, T b)
{
  if (a < b)
  {
    a = b;
    return 1;
  }
  return 0;
}
int n, k, ans = INF;
ll dis[MAXN];
vector<PII> adj[MAXN];
set<pair<ll, int>> s[MAXN];
void dfs(int nd, int pr, int lvl)
{
  tr(it, adj[nd])
  {
    int to = it->ff;
    if (to != pr)
    {
      dis[to] = dis[nd] + it->ss;
      dfs(to, nd, lvl + 1);
      if ((int)s[to].size() > (int)s[nd].size())
        swap(s[to], s[nd]);
      __typeof((s[nd]).begin()) itt;
      tr(it, s[to]) if (dis[nd] * 2 + k >= it->ff)
      {
        itt = s[nd].lower_bound(mp(dis[nd] * 2 + k - it->ff, -1));
        if (itt != s[nd].end() and itt->ff + it->ff == k + dis[nd] * 2)
          umin(ans, it->ss + itt->ss - 2 * lvl);
      }
      tr(it, s[to]) s[nd].insert(*it);
      s[to].clear();
    }
  }
  s[nd].insert(mp(dis[nd], lvl));
  __typeof((s[nd]).begin()) itt = s[nd].lower_bound(mp(k + dis[nd], -1));
  if (itt != s[nd].end() and itt->ff - dis[nd] == k)
    umin(ans, itt->ss - lvl);
}
int best_path(int N, int K, int h[][2], int l[])
{
  n = N, k = K;
  for (int i = 0; i < n - 1; i++)
  {
    int u = h[i][0], v = h[i][1];
    adj[u].pb(mp(v, l[i]));
    adj[v].pb(mp(u, l[i]));
  }
  dfs(1, -1, 0);
  if (ans == INF)
    ans = -1;
  return ans;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 18776 KB Output is correct
2 Correct 5 ms 18780 KB Output is correct
3 Correct 7 ms 18884 KB Output is correct
4 Correct 5 ms 18780 KB Output is correct
5 Correct 5 ms 18780 KB Output is correct
6 Correct 5 ms 18780 KB Output is correct
7 Correct 5 ms 18888 KB Output is correct
8 Correct 5 ms 18780 KB Output is correct
9 Correct 5 ms 18780 KB Output is correct
10 Correct 7 ms 19036 KB Output is correct
11 Correct 5 ms 18780 KB Output is correct
12 Correct 5 ms 18776 KB Output is correct
13 Correct 6 ms 18780 KB Output is correct
14 Correct 5 ms 18868 KB Output is correct
15 Correct 5 ms 18780 KB Output is correct
16 Correct 6 ms 18776 KB Output is correct
17 Correct 5 ms 18780 KB Output is correct
18 Correct 5 ms 18776 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 18776 KB Output is correct
2 Correct 5 ms 18780 KB Output is correct
3 Correct 7 ms 18884 KB Output is correct
4 Correct 5 ms 18780 KB Output is correct
5 Correct 5 ms 18780 KB Output is correct
6 Correct 5 ms 18780 KB Output is correct
7 Correct 5 ms 18888 KB Output is correct
8 Correct 5 ms 18780 KB Output is correct
9 Correct 5 ms 18780 KB Output is correct
10 Correct 7 ms 19036 KB Output is correct
11 Correct 5 ms 18780 KB Output is correct
12 Correct 5 ms 18776 KB Output is correct
13 Correct 6 ms 18780 KB Output is correct
14 Correct 5 ms 18868 KB Output is correct
15 Correct 5 ms 18780 KB Output is correct
16 Correct 6 ms 18776 KB Output is correct
17 Correct 5 ms 18780 KB Output is correct
18 Correct 5 ms 18776 KB Output is correct
19 Correct 5 ms 18800 KB Output is correct
20 Correct 5 ms 18916 KB Output is correct
21 Correct 6 ms 18780 KB Output is correct
22 Correct 6 ms 18780 KB Output is correct
23 Correct 6 ms 18780 KB Output is correct
24 Correct 6 ms 18780 KB Output is correct
25 Correct 7 ms 18896 KB Output is correct
26 Correct 6 ms 18780 KB Output is correct
27 Correct 5 ms 18880 KB Output is correct
28 Correct 6 ms 18780 KB Output is correct
29 Correct 6 ms 19016 KB Output is correct
30 Correct 5 ms 18780 KB Output is correct
31 Correct 6 ms 18916 KB Output is correct
32 Correct 5 ms 19036 KB Output is correct
33 Correct 6 ms 18780 KB Output is correct
34 Correct 5 ms 19036 KB Output is correct
35 Correct 6 ms 19036 KB Output is correct
36 Correct 6 ms 19036 KB Output is correct
37 Correct 5 ms 19036 KB Output is correct
38 Correct 5 ms 19036 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 18776 KB Output is correct
2 Correct 5 ms 18780 KB Output is correct
3 Correct 7 ms 18884 KB Output is correct
4 Correct 5 ms 18780 KB Output is correct
5 Correct 5 ms 18780 KB Output is correct
6 Correct 5 ms 18780 KB Output is correct
7 Correct 5 ms 18888 KB Output is correct
8 Correct 5 ms 18780 KB Output is correct
9 Correct 5 ms 18780 KB Output is correct
10 Correct 7 ms 19036 KB Output is correct
11 Correct 5 ms 18780 KB Output is correct
12 Correct 5 ms 18776 KB Output is correct
13 Correct 6 ms 18780 KB Output is correct
14 Correct 5 ms 18868 KB Output is correct
15 Correct 5 ms 18780 KB Output is correct
16 Correct 6 ms 18776 KB Output is correct
17 Correct 5 ms 18780 KB Output is correct
18 Correct 5 ms 18776 KB Output is correct
19 Correct 100 ms 25172 KB Output is correct
20 Correct 100 ms 26456 KB Output is correct
21 Correct 88 ms 26492 KB Output is correct
22 Correct 100 ms 26708 KB Output is correct
23 Correct 113 ms 27260 KB Output is correct
24 Correct 91 ms 26468 KB Output is correct
25 Correct 101 ms 47956 KB Output is correct
26 Correct 72 ms 48980 KB Output is correct
27 Correct 160 ms 35668 KB Output is correct
28 Correct 258 ms 76652 KB Output is correct
29 Correct 246 ms 69264 KB Output is correct
30 Correct 150 ms 35764 KB Output is correct
31 Correct 169 ms 35720 KB Output is correct
32 Correct 217 ms 35672 KB Output is correct
33 Correct 176 ms 31828 KB Output is correct
34 Correct 325 ms 45504 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 18776 KB Output is correct
2 Correct 5 ms 18780 KB Output is correct
3 Correct 7 ms 18884 KB Output is correct
4 Correct 5 ms 18780 KB Output is correct
5 Correct 5 ms 18780 KB Output is correct
6 Correct 5 ms 18780 KB Output is correct
7 Correct 5 ms 18888 KB Output is correct
8 Correct 5 ms 18780 KB Output is correct
9 Correct 5 ms 18780 KB Output is correct
10 Correct 7 ms 19036 KB Output is correct
11 Correct 5 ms 18780 KB Output is correct
12 Correct 5 ms 18776 KB Output is correct
13 Correct 6 ms 18780 KB Output is correct
14 Correct 5 ms 18868 KB Output is correct
15 Correct 5 ms 18780 KB Output is correct
16 Correct 6 ms 18776 KB Output is correct
17 Correct 5 ms 18780 KB Output is correct
18 Correct 5 ms 18776 KB Output is correct
19 Correct 5 ms 18800 KB Output is correct
20 Correct 5 ms 18916 KB Output is correct
21 Correct 6 ms 18780 KB Output is correct
22 Correct 6 ms 18780 KB Output is correct
23 Correct 6 ms 18780 KB Output is correct
24 Correct 6 ms 18780 KB Output is correct
25 Correct 7 ms 18896 KB Output is correct
26 Correct 6 ms 18780 KB Output is correct
27 Correct 5 ms 18880 KB Output is correct
28 Correct 6 ms 18780 KB Output is correct
29 Correct 6 ms 19016 KB Output is correct
30 Correct 5 ms 18780 KB Output is correct
31 Correct 6 ms 18916 KB Output is correct
32 Correct 5 ms 19036 KB Output is correct
33 Correct 6 ms 18780 KB Output is correct
34 Correct 5 ms 19036 KB Output is correct
35 Correct 6 ms 19036 KB Output is correct
36 Correct 6 ms 19036 KB Output is correct
37 Correct 5 ms 19036 KB Output is correct
38 Correct 5 ms 19036 KB Output is correct
39 Correct 100 ms 25172 KB Output is correct
40 Correct 100 ms 26456 KB Output is correct
41 Correct 88 ms 26492 KB Output is correct
42 Correct 100 ms 26708 KB Output is correct
43 Correct 113 ms 27260 KB Output is correct
44 Correct 91 ms 26468 KB Output is correct
45 Correct 101 ms 47956 KB Output is correct
46 Correct 72 ms 48980 KB Output is correct
47 Correct 160 ms 35668 KB Output is correct
48 Correct 258 ms 76652 KB Output is correct
49 Correct 246 ms 69264 KB Output is correct
50 Correct 150 ms 35764 KB Output is correct
51 Correct 169 ms 35720 KB Output is correct
52 Correct 217 ms 35672 KB Output is correct
53 Correct 176 ms 31828 KB Output is correct
54 Correct 325 ms 45504 KB Output is correct
55 Correct 15 ms 20060 KB Output is correct
56 Correct 14 ms 19484 KB Output is correct
57 Correct 54 ms 26452 KB Output is correct
58 Correct 38 ms 26056 KB Output is correct
59 Correct 76 ms 49000 KB Output is correct
60 Correct 230 ms 67532 KB Output is correct
61 Correct 203 ms 40164 KB Output is correct
62 Correct 179 ms 35796 KB Output is correct
63 Correct 197 ms 35924 KB Output is correct
64 Correct 346 ms 45688 KB Output is correct
65 Correct 341 ms 46196 KB Output is correct
66 Correct 238 ms 74792 KB Output is correct
67 Correct 152 ms 33488 KB Output is correct
68 Correct 282 ms 45520 KB Output is correct
69 Correct 314 ms 50532 KB Output is correct
70 Correct 289 ms 44524 KB Output is correct