oj.uz

Submission #758154

# Submission time Handle Problem Language Result Execution time Memory
758154 2023-06-14T08:22:57 Z vjudge1 Hard route (IZhO17_road) C++17
52 / 100
 322 ms 988 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#define int long long
#define endl "\n"
int mod=1e7+9;
const int N=5005;//2e5+5;
template<class x>
using ordered_multiset = tree<x, null_type,less_equal<x>, rb_tree_tag,tree_order_statistics_node_update>;

int n,ans,cnt;
int dis[N];
pair<int,int> lvs[N];
vector<int> v[N];


void cldis(int i,int par,int d) {
  dis[i]=0;
  for (int j:v[i]) {
    if (j!=par) {
      cldis(j,i,d+1);
      dis[i]=max(dis[i],dis[j]);
    }
  }
  dis[i]++;
}

void dfs(int i,int par,int lvl,int h) {
  if (v[i].size()==1 && par!=0) {
    int tmp=lvl*h;
    if (tmp==ans) cnt++;
    else if (tmp>ans) {ans=tmp; cnt=1;}
    return;
  }

  int mx1=0,mx2=0;
  for (int j:v[i]) {
    if (j!=par) {
      if (dis[j]>=mx1) {mx2=mx1; mx1=dis[j];}
      else if (dis[j]<mx1 && dis[j]>mx2) mx2=dis[j];
    }
  }

  for (int j:v[i]) {
    int gg;
    if (j!=par) {
      if (dis[j]==mx1) gg=mx2;
      else gg=mx1;
      dfs(j,i,lvl+1,max(gg,h));
    }
  }
}

signed main() {
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);

    cin>>n;
    for (int i=1;i<n;i++) {
      int a,b; cin>>a>>b;
      v[a].push_back(b);
      v[b].push_back(a);
    }

    for (int i=1;i<=n;i++) {
      if (v[i].size()>1) continue;
      cldis(i,0,0);
      dfs(i,0,0,0);
    }

    cout<<ans<<' '<<cnt/2;
}

Subtask #1
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 440 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 444 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 428 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 440 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct

Subtask #2
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 440 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 444 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 428 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 440 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 191 ms 884 KB Output is correct
26 Correct 197 ms 888 KB Output is correct
27 Correct 203 ms 876 KB Output is correct
28 Correct 193 ms 852 KB Output is correct
29 Correct 254 ms 900 KB Output is correct
30 Correct 287 ms 900 KB Output is correct
31 Correct 232 ms 908 KB Output is correct
32 Correct 251 ms 852 KB Output is correct
33 Correct 4 ms 964 KB Output is correct
34 Correct 4 ms 988 KB Output is correct
35 Correct 4 ms 980 KB Output is correct
36 Correct 5 ms 972 KB Output is correct
37 Correct 3 ms 968 KB Output is correct
38 Correct 3 ms 980 KB Output is correct
39 Correct 3 ms 724 KB Output is correct
40 Correct 5 ms 712 KB Output is correct
41 Correct 6 ms 724 KB Output is correct
42 Correct 13 ms 596 KB Output is correct
43 Correct 21 ms 584 KB Output is correct
44 Correct 42 ms 672 KB Output is correct
45 Correct 92 ms 596 KB Output is correct
46 Correct 116 ms 636 KB Output is correct
47 Correct 260 ms 692 KB Output is correct
48 Correct 322 ms 724 KB Output is correct

Subtask #3
0 / 48.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 440 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 444 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 428 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 440 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 191 ms 884 KB Output is correct
26 Correct 197 ms 888 KB Output is correct
27 Correct 203 ms 876 KB Output is correct
28 Correct 193 ms 852 KB Output is correct
29 Correct 254 ms 900 KB Output is correct
30 Correct 287 ms 900 KB Output is correct
31 Correct 232 ms 908 KB Output is correct
32 Correct 251 ms 852 KB Output is correct
33 Correct 4 ms 964 KB Output is correct
34 Correct 4 ms 988 KB Output is correct
35 Correct 4 ms 980 KB Output is correct
36 Correct 5 ms 972 KB Output is correct
37 Correct 3 ms 968 KB Output is correct
38 Correct 3 ms 980 KB Output is correct
39 Correct 3 ms 724 KB Output is correct
40 Correct 5 ms 712 KB Output is correct
41 Correct 6 ms 724 KB Output is correct
42 Correct 13 ms 596 KB Output is correct
43 Correct 21 ms 584 KB Output is correct
44 Correct 42 ms 672 KB Output is correct
45 Correct 92 ms 596 KB Output is correct
46 Correct 116 ms 636 KB Output is correct
47 Correct 260 ms 692 KB Output is correct
48 Correct 322 ms 724 KB Output is correct
49 Runtime error 1 ms 724 KB Execution killed with signal 11
50 Halted 0 ms 0 KB -