oj.uz

Submission #961310

# Submission time Handle Problem Language Result Execution time Memory
961310 2024-04-11T19:54:22 Z Prieved1 Longest Trip (IOI23_longesttrip) C++17
5 / 100
 45 ms 4696 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]);
    }
    if(rand()%2) {
      reverse(t[0].begin(), t[0].end());
      if(t[1].size() and query2(t[0].back(), t[1].back())) {
          while(t[1].size()) {
            t[0].push_back(t[1].back());
            t[1].pop_back();
          }
      }
    }
    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<=384);
  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 Incorrect 0 ms 344 KB Incorrect
2 Halted 0 ms 0 KB -

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 344 KB Output is correct
2 Correct 6 ms 600 KB Output is correct
3 Correct 9 ms 344 KB Output is correct
4 Correct 15 ms 1368 KB Output is correct
5 Correct 24 ms 3596 KB Output is correct

Subtask #2
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 344 KB Output is correct
2 Correct 6 ms 344 KB Output is correct
3 Correct 9 ms 340 KB Output is correct
4 Correct 16 ms 1368 KB Output is correct
5 Correct 28 ms 3928 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 7 ms 344 KB Output is correct
2 Correct 6 ms 344 KB Output is correct
3 Correct 10 ms 600 KB Output is correct
4 Correct 16 ms 1368 KB Output is correct
5 Correct 29 ms 3940 KB Output is correct
6 Correct 6 ms 344 KB Output is correct
7 Correct 8 ms 344 KB Output is correct
8 Correct 9 ms 344 KB Output is correct
9 Correct 14 ms 856 KB Output is correct
10 Correct 32 ms 3672 KB Output is correct
11 Correct 27 ms 3672 KB Output is correct
12 Correct 27 ms 3672 KB Output is correct
13 Correct 26 ms 3416 KB Output is correct
14 Correct 6 ms 344 KB Output is correct
15 Correct 7 ms 340 KB Output is correct
16 Correct 9 ms 344 KB Output is correct
17 Correct 10 ms 600 KB Output is correct
18 Correct 11 ms 856 KB Output is correct
19 Correct 16 ms 1112 KB Output is correct
20 Correct 17 ms 856 KB Output is correct
21 Correct 28 ms 3480 KB Output is correct
22 Correct 32 ms 3664 KB Output is correct
23 Correct 33 ms 3480 KB Output is correct
24 Correct 29 ms 3672 KB Output is correct
25 Correct 7 ms 344 KB Output is correct
26 Correct 7 ms 596 KB Output is correct
27 Correct 7 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 14 ms 436 KB Output is correct
31 Correct 16 ms 684 KB Output is correct
32 Correct 16 ms 440 KB Output is correct
33 Correct 18 ms 856 KB Output is correct
34 Correct 20 ms 1112 KB Output is correct
35 Correct 22 ms 856 KB Output is correct
36 Correct 45 ms 3376 KB Output is correct
37 Runtime error 12 ms 4696 KB Execution killed with signal 6
38 Halted 0 ms 0 KB -

Subtask #4
0.0 / 60.0

# 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 10 ms 344 KB Output is correct
4 Correct 17 ms 1112 KB Output is correct
5 Correct 26 ms 3528 KB Output is correct
6 Incorrect 0 ms 344 KB Incorrect
7 Halted 0 ms 0 KB -