oj.uz

Submission #961287

# Submission time Handle Problem Language Result Execution time Memory
961287 2024-04-11T19:40:20 Z Prieved1 Longest Trip (IOI23_longesttrip) C++17
5 / 100
 37 ms 6152 KB 
#include "longesttrip.h"
#include <bits/stdc++.h>
using namespace std;
int cnt=0;
int n;
map<int, map<int,int>> mp;
bool query1(int a, int b) {
  if(mp[a][b]!=0)return mp[a][b]-1;
  int c=are_connected({a}, {b});
  mp[a][b]=c+1;
  mp[b][a]=c+1;
  cnt++;
  return c;
}
bool query2(int a, int b) {
 for(int j  = 0;j<n;j++) {
  if(a==j or j==b)continue;
  if(mp[a][j]==1 and mp[j][b]==1) {
    mp[a][b]=2;
    mp[b][a]=2;
    return 1;
  }
 }
 return query1(a,b);
}
vector<int> longest_trip(int N, int D)
{
  n=N;
  cnt=0;
  mp.clear();
  srand(time(NULL));
  vector<int> id(N);
  iota(id.begin(), id.end(), 0);
  random_shuffle(id.begin(), id.end());
  vector<int> t[2];
  t[0].push_back(id[0]);
  for(int ii = 1;ii<N;ii++) {
    int i=id[ii];
    if(t[1].size() > t[0].size())swap(t[0], t[1]);
    if(t[1].size()) {
      if(rand()%2)swap(t[0], t[1]);
    }
    int c=query2(t[0].back(), i);
    if(!c) {
      t[1].push_back(i);
    }
    else {
      t[0].push_back(i);
      if(t[1].size()) {
        c=query2(t[1].back(), i);
        if(c) {
          while(t[1].size()) {
            t[0].push_back(t[1].back());
            t[1].pop_back();
          }
        }
      }
    }
  }
  assert(cnt<=400);
  if(t[0].size()<t[1].size())swap(t[0], t[1]);
  return t[0];
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 8 ms 2904 KB Output is correct

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 344 KB Output is correct
2 Correct 7 ms 344 KB Output is correct
3 Correct 10 ms 344 KB Output is correct
4 Correct 15 ms 1112 KB Output is correct
5 Correct 27 ms 3416 KB Output is correct

Subtask #2
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 344 KB Output is correct
2 Correct 6 ms 344 KB Output is correct
3 Correct 9 ms 600 KB Output is correct
4 Correct 16 ms 1368 KB Output is correct
5 Correct 29 ms 3700 KB Output is correct
6 Incorrect 1 ms 344 KB Incorrect
7 Halted 0 ms 0 KB -

Subtask #3
0.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 344 KB Output is correct
2 Correct 7 ms 344 KB Output is correct
3 Correct 11 ms 600 KB Output is correct
4 Correct 18 ms 1368 KB Output is correct
5 Correct 27 ms 3672 KB Output is correct
6 Correct 7 ms 344 KB Output is correct
7 Correct 7 ms 344 KB Output is correct
8 Correct 9 ms 344 KB Output is correct
9 Correct 13 ms 856 KB Output is correct
10 Correct 27 ms 3916 KB Output is correct
11 Correct 28 ms 3928 KB Output is correct
12 Correct 27 ms 3672 KB Output is correct
13 Correct 30 ms 3624 KB Output is correct
14 Correct 7 ms 344 KB Output is correct
15 Correct 8 ms 344 KB Output is correct
16 Correct 9 ms 344 KB Output is correct
17 Correct 9 ms 600 KB Output is correct
18 Correct 11 ms 600 KB Output is correct
19 Correct 15 ms 1096 KB Output is correct
20 Correct 16 ms 856 KB Output is correct
21 Correct 31 ms 3708 KB Output is correct
22 Correct 26 ms 3484 KB Output is correct
23 Correct 29 ms 3376 KB Output is correct
24 Correct 26 ms 3188 KB Output is correct
25 Correct 6 ms 344 KB Output is correct
26 Correct 7 ms 344 KB Output is correct
27 Correct 6 ms 344 KB Output is correct
28 Correct 7 ms 344 KB Output is correct
29 Correct 7 ms 344 KB Output is correct
30 Correct 12 ms 692 KB Output is correct
31 Correct 16 ms 944 KB Output is correct
32 Correct 16 ms 696 KB Output is correct
33 Correct 15 ms 1112 KB Output is correct
34 Correct 16 ms 1112 KB Output is correct
35 Correct 15 ms 856 KB Output is correct
36 Correct 32 ms 3112 KB Output is correct
37 Correct 32 ms 2136 KB Output is correct
38 Correct 32 ms 2792 KB Output is correct
39 Correct 33 ms 3524 KB Output is correct
40 Correct 37 ms 2904 KB Output is correct
41 Correct 31 ms 2736 KB Output is correct
42 Correct 32 ms 2772 KB Output is correct
43 Correct 33 ms 2904 KB Output is correct
44 Correct 31 ms 2904 KB Output is correct
45 Correct 7 ms 344 KB Output is correct
46 Correct 7 ms 344 KB Output is correct
47 Correct 6 ms 344 KB Output is correct
48 Correct 7 ms 344 KB Output is correct
49 Correct 8 ms 600 KB Output is correct
50 Correct 15 ms 712 KB Output is correct
51 Correct 15 ms 828 KB Output is correct
52 Correct 16 ms 848 KB Output is correct
53 Correct 16 ms 856 KB Output is correct
54 Correct 17 ms 1112 KB Output is correct
55 Correct 19 ms 1116 KB Output is correct
56 Correct 33 ms 3680 KB Output is correct
57 Correct 32 ms 2912 KB Output is correct
58 Correct 33 ms 2732 KB Output is correct
59 Correct 36 ms 3416 KB Output is correct
60 Correct 34 ms 3412 KB Output is correct
61 Correct 34 ms 3672 KB Output is correct
62 Runtime error 13 ms 6152 KB Execution killed with signal 6
63 Halted 0 ms 0 KB -

Subtask #4
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 9 ms 344 KB Output is correct
4 Correct 19 ms 1024 KB Output is correct
5 Correct 26 ms 3672 KB Output is correct
6 Incorrect 1 ms 344 KB Incorrect
7 Halted 0 ms 0 KB -