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Submission #961281

# Submission time Handle Problem Language Result Execution time Memory
961281 2024-04-11T19:33:02 Z Prieved1 Longest Trip (IOI23_longesttrip) C++17
30 / 100
 10 ms 1112 KB 
#include "longesttrip.h"
#include <bits/stdc++.h>
using namespace std;
int cnt=0;
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;
}
vector<int> longest_trip(int N, int D)
{
  cnt=0;
  mp.clear();
  srand(time(NULL));
  vector<int> t[2];
  t[0].push_back(0);
  for(int i = 1;i<N;i++) {
    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=query1(t[0].back(), i);
    if(!c) {
      t[1].push_back(i);
    }
    else {
      t[0].push_back(i);
      if(t[1].size()) {
        c=query1(t[1].back(), i);
        if(c) {
          while(t[1].size()) {
            t[0].push_back(t[1].back());
            t[1].pop_back();
          }
        }
      }
    }
  }
  assert(cnt<=450);
  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 2 ms 600 KB Output is correct

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 340 KB Output is correct
2 Correct 6 ms 600 KB Output is correct
3 Correct 5 ms 344 KB Output is correct
4 Correct 6 ms 344 KB Output is correct
5 Correct 6 ms 600 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 5 ms 600 KB Output is correct
4 Correct 6 ms 436 KB Output is correct
5 Correct 5 ms 344 KB Output is correct
6 Incorrect 0 ms 344 KB Incorrect
7 Halted 0 ms 0 KB -

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 344 KB Output is correct
2 Correct 6 ms 344 KB Output is correct
3 Correct 5 ms 600 KB Output is correct
4 Correct 6 ms 600 KB Output is correct
5 Correct 6 ms 600 KB Output is correct
6 Correct 6 ms 344 KB Output is correct
7 Correct 7 ms 500 KB Output is correct
8 Correct 5 ms 696 KB Output is correct
9 Correct 4 ms 344 KB Output is correct
10 Correct 5 ms 344 KB Output is correct
11 Correct 6 ms 600 KB Output is correct
12 Correct 5 ms 600 KB Output is correct
13 Correct 6 ms 596 KB Output is correct
14 Correct 7 ms 344 KB Output is correct
15 Correct 7 ms 344 KB Output is correct
16 Correct 8 ms 600 KB Output is correct
17 Correct 6 ms 344 KB Output is correct
18 Correct 6 ms 344 KB Output is correct
19 Correct 7 ms 600 KB Output is correct
20 Correct 7 ms 600 KB Output is correct
21 Correct 8 ms 600 KB Output is correct
22 Correct 6 ms 344 KB Output is correct
23 Correct 6 ms 632 KB Output is correct
24 Correct 5 ms 596 KB Output is correct
25 Correct 8 ms 344 KB Output is correct
26 Correct 7 ms 344 KB Output is correct
27 Correct 8 ms 344 KB Output is correct
28 Correct 8 ms 344 KB Output is correct
29 Correct 10 ms 344 KB Output is correct
30 Correct 6 ms 692 KB Output is correct
31 Correct 9 ms 436 KB Output is correct
32 Correct 6 ms 436 KB Output is correct
33 Correct 6 ms 344 KB Output is correct
34 Correct 7 ms 344 KB Output is correct
35 Correct 7 ms 600 KB Output is correct
36 Correct 7 ms 600 KB Output is correct
37 Correct 9 ms 344 KB Output is correct
38 Correct 7 ms 600 KB Output is correct
39 Correct 7 ms 600 KB Output is correct
40 Correct 8 ms 856 KB Output is correct
41 Correct 7 ms 600 KB Output is correct
42 Correct 7 ms 1112 KB Output is correct
43 Correct 10 ms 600 KB Output is correct
44 Correct 8 ms 600 KB Output is correct
45 Correct 7 ms 344 KB Output is correct
46 Correct 8 ms 344 KB Output is correct
47 Correct 6 ms 344 KB Output is correct
48 Correct 8 ms 344 KB Output is correct
49 Correct 8 ms 600 KB Output is correct
50 Correct 6 ms 692 KB Output is correct
51 Correct 6 ms 432 KB Output is correct
52 Correct 7 ms 632 KB Output is correct
53 Correct 6 ms 600 KB Output is correct
54 Correct 6 ms 600 KB Output is correct
55 Correct 6 ms 600 KB Output is correct
56 Correct 7 ms 612 KB Output is correct
57 Correct 7 ms 856 KB Output is correct
58 Correct 9 ms 344 KB Output is correct
59 Correct 7 ms 600 KB Output is correct
60 Correct 8 ms 600 KB Output is correct
61 Correct 9 ms 736 KB Output is correct
62 Correct 7 ms 600 KB Output is correct
63 Correct 6 ms 344 KB Output is correct
64 Correct 9 ms 600 KB Output is correct

Subtask #4
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 348 KB Output is correct
2 Correct 6 ms 356 KB Output is correct
3 Correct 4 ms 356 KB Output is correct
4 Correct 5 ms 856 KB Output is correct
5 Correct 5 ms 856 KB Output is correct
6 Incorrect 0 ms 344 KB Incorrect
7 Halted 0 ms 0 KB -