oj.uz

Submission #961290

# Submission time Handle Problem Language Result Execution time Memory
961290 2024-04-11T19:44:15 Z Prieved1 Longest Trip (IOI23_longesttrip) C++17
5 / 100
 41 ms 5448 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<=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 1 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 344 KB Output is correct
3 Correct 9 ms 600 KB Output is correct
4 Correct 19 ms 1112 KB Output is correct
5 Correct 30 ms 3876 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 7 ms 344 KB Output is correct
3 Correct 9 ms 344 KB Output is correct
4 Correct 18 ms 1400 KB Output is correct
5 Correct 25 ms 3672 KB Output is correct
6 Incorrect 0 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 9 ms 344 KB Output is correct
4 Correct 15 ms 1112 KB Output is correct
5 Correct 28 ms 3672 KB Output is correct
6 Correct 7 ms 344 KB Output is correct
7 Correct 6 ms 344 KB Output is correct
8 Correct 11 ms 344 KB Output is correct
9 Correct 17 ms 1112 KB Output is correct
10 Correct 29 ms 3872 KB Output is correct
11 Correct 30 ms 3416 KB Output is correct
12 Correct 27 ms 3688 KB Output is correct
13 Correct 29 ms 3668 KB Output is correct
14 Correct 8 ms 344 KB Output is correct
15 Correct 6 ms 344 KB Output is correct
16 Correct 12 ms 344 KB Output is correct
17 Correct 8 ms 344 KB Output is correct
18 Correct 11 ms 600 KB Output is correct
19 Correct 15 ms 600 KB Output is correct
20 Correct 15 ms 856 KB Output is correct
21 Correct 29 ms 3432 KB Output is correct
22 Correct 26 ms 3160 KB Output is correct
23 Correct 27 ms 3556 KB Output is correct
24 Correct 32 ms 3328 KB Output is correct
25 Correct 8 ms 344 KB Output is correct
26 Correct 7 ms 344 KB Output is correct
27 Correct 7 ms 356 KB Output is correct
28 Correct 9 ms 344 KB Output is correct
29 Correct 8 ms 344 KB Output is correct
30 Correct 14 ms 1212 KB Output is correct
31 Correct 13 ms 436 KB Output is correct
32 Correct 13 ms 696 KB Output is correct
33 Correct 17 ms 856 KB Output is correct
34 Correct 18 ms 1368 KB Output is correct
35 Correct 18 ms 1128 KB Output is correct
36 Correct 29 ms 3448 KB Output is correct
37 Correct 41 ms 2592 KB Output is correct
38 Correct 27 ms 2500 KB Output is correct
39 Correct 33 ms 2924 KB Output is correct
40 Correct 33 ms 3032 KB Output is correct
41 Runtime error 34 ms 5448 KB Execution killed with signal 6
42 Halted 0 ms 0 KB -

Subtask #4
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 344 KB Output is correct
2 Correct 6 ms 504 KB Output is correct
3 Correct 8 ms 344 KB Output is correct
4 Correct 17 ms 1368 KB Output is correct
5 Correct 28 ms 3772 KB Output is correct
6 Incorrect 0 ms 344 KB Incorrect
7 Halted 0 ms 0 KB -