oj.uz

Submission #1060293

# Submission time Handle Problem Language Result Execution time Memory
1060293 2024-08-15T12:42:14 Z mychecksedad Longest Trip (IOI23_longesttrip) C++17
40 / 100
 891 ms 1564 KB 
#include "longesttrip.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define all(x) x.begin(),x.end()
#define ll long long
#define ff first
#define ss second
#define vi vector<int>
const int N = 200005;
 
std::vector<int> longest_trip(int n, int D)
{
  if(D == 3){
    vector<int> v;
    for(int i = 0; i < n; ++i) v.pb(i);
    return v;
  }
  if(D == 2){
    deque<int> v;
    v.pb(0);
    int o = -1;
    for(int i = 1; i < n; ++i){
      bool x = are_connected(vi{0}, vi{i});
      if(x){
        o = i;
        v.pb(i);
        break;
      }
    }
    if(o == -1){
      vi res;
      for(int i = 1; i < n; ++i){
        res.pb(i);
      }
      return res;
    }
    for(int i = 1; i < n; ++i){
      if(o == i) continue;
      bool x = are_connected(vi{v[0]}, vi{i});
      if(x){
        v.push_front(i);
      }else v.pb(i);
    }
    vector<int> res(all(v));
    return res;
  }
  vector<vector<int>> g(n);
  vector<vector<bool>> is(n, vector<bool>(n));
  for(int i = 0; i < n; ++i){
    for(int j = i + 1; j < n; ++j){
      bool ok = are_connected(vi{i}, vi{j});
      if(ok){
        is[i][j] = is[j][i] = 1;
        g[i].pb(j);
        g[j].pb(i);
      }
    }
  }
  vector<vector<int>> S;
  for(int i = 0; i < n; ++i){
    if(g[i].empty()){
      vi res;
      for(int j = 0; j < n; ++j){
        if(j != i) res.pb(j);
      }
      return res;
    }
    bool okk = 0;
    for(auto &s: S){
      bool ok = 1;
      for(int x: s){
        if(is[x][i] == 0) ok = 0;
      }
      if(ok == 1){
        s.pb(i);
        okk = 1;
        break;
      }
    }
    if(okk == 0){
      S.pb(vi{i});
    }
  }
  if(S.size() == 1) return S[0];
  if(S.size() == 2){
    for(int &x: S[0]){
      for(int &y: S[1]){
        if(is[x][y]){
          swap(x, S[0].back());
          swap(y, S[1][0]);
          vi res;
          for(int f: S[0]) res.pb(f);
          for(int f: S[1]) res.pb(f);
          return res;
        }   
      }
    }
    if(S[0].size() > S[1].size()) return S[0];
    return S[1];
  }
  
  deque<int> a, b;
  a.pb(0);
  for(int i = 1; i < n; ++i){
    if(is[a[0]][i]){
      a.push_front(i);
    }else if(is[a.back()][i]){
      a.pb(i);
    }else{
      if(b.empty()) b.pb(i);
      else{
        if(is[b[0]][i]){
          b.push_front(i);
        }else if(is[b.back()][i]){
          b.pb(i);
        }else{
          if(is[a[0]][b[0]]){
            for(int x: b) a.push_front(x);
            b.clear();
            b.pb(i);
          }else{
            assert(false);
          }
        }
      }
    }
  }
  if(a.size() < b.size()) swap(a, b);
  vector<int> res(all(a));
  return res;
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 217 ms 736 KB Incorrect
3 Halted 0 ms 0 KB -

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 344 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 5 ms 344 KB Output is correct
4 Correct 7 ms 344 KB Output is correct
5 Correct 6 ms 344 KB Output is correct
6 Correct 5 ms 344 KB Output is correct
7 Correct 5 ms 344 KB Output is correct
8 Correct 5 ms 344 KB Output is correct
9 Correct 5 ms 344 KB Output is correct
10 Correct 5 ms 344 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 5 ms 344 KB Output is correct
13 Correct 7 ms 344 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 344 KB Output is correct
2 Correct 31 ms 344 KB Output is correct
3 Correct 167 ms 344 KB Output is correct
4 Correct 438 ms 888 KB Output is correct
5 Correct 852 ms 976 KB Output is correct
6 Correct 8 ms 344 KB Output is correct
7 Correct 22 ms 344 KB Output is correct
8 Correct 161 ms 452 KB Output is correct
9 Correct 314 ms 744 KB Output is correct
10 Correct 810 ms 1040 KB Output is correct
11 Correct 849 ms 976 KB Output is correct
12 Correct 842 ms 988 KB Output is correct
13 Correct 891 ms 892 KB Output is correct
14 Correct 7 ms 344 KB Output is correct
15 Correct 15 ms 344 KB Output is correct
16 Correct 42 ms 344 KB Output is correct
17 Correct 99 ms 440 KB Output is correct
18 Correct 136 ms 444 KB Output is correct
19 Correct 292 ms 756 KB Output is correct
20 Correct 283 ms 616 KB Output is correct
21 Correct 844 ms 1072 KB Output is correct
22 Correct 838 ms 1424 KB Output is correct
23 Correct 850 ms 1328 KB Output is correct
24 Correct 843 ms 1132 KB Output is correct
25 Correct 9 ms 344 KB Output is correct
26 Correct 9 ms 344 KB Output is correct
27 Correct 25 ms 408 KB Output is correct
28 Correct 23 ms 588 KB Output is correct
29 Correct 22 ms 344 KB Output is correct
30 Correct 178 ms 600 KB Output is correct
31 Correct 215 ms 344 KB Output is correct
32 Correct 180 ms 436 KB Output is correct
33 Correct 293 ms 740 KB Output is correct
34 Correct 294 ms 476 KB Output is correct
35 Correct 324 ms 732 KB Output is correct
36 Correct 787 ms 1016 KB Output is correct
37 Correct 819 ms 712 KB Output is correct
38 Correct 798 ms 860 KB Output is correct
39 Correct 782 ms 1044 KB Output is correct
40 Correct 825 ms 1084 KB Output is correct
41 Correct 871 ms 1236 KB Output is correct
42 Correct 837 ms 1216 KB Output is correct
43 Correct 856 ms 1012 KB Output is correct
44 Correct 849 ms 1084 KB Output is correct
45 Correct 11 ms 344 KB Output is correct
46 Correct 9 ms 344 KB Output is correct
47 Correct 23 ms 344 KB Output is correct
48 Correct 22 ms 344 KB Output is correct
49 Correct 23 ms 344 KB Output is correct
50 Correct 210 ms 344 KB Output is correct
51 Correct 174 ms 440 KB Output is correct
52 Correct 193 ms 344 KB Output is correct
53 Correct 311 ms 464 KB Output is correct
54 Correct 319 ms 592 KB Output is correct
55 Correct 300 ms 592 KB Output is correct
56 Correct 838 ms 1564 KB Output is correct
57 Correct 840 ms 1376 KB Output is correct
58 Correct 825 ms 948 KB Output is correct
59 Correct 821 ms 984 KB Output is correct
60 Correct 866 ms 1136 KB Output is correct
61 Correct 813 ms 816 KB Output is correct
62 Correct 842 ms 592 KB Output is correct
63 Correct 836 ms 1100 KB Output is correct
64 Correct 851 ms 760 KB Output is correct

Subtask #4
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 344 KB Output is correct
2 Correct 25 ms 344 KB Output is correct
3 Partially correct 151 ms 440 KB Output is partially correct
4 Partially correct 403 ms 344 KB Output is partially correct
5 Partially correct 849 ms 1036 KB Output is partially correct
6 Correct 7 ms 344 KB Output is correct
7 Correct 22 ms 344 KB Output is correct
8 Partially correct 131 ms 436 KB Output is partially correct
9 Partially correct 318 ms 948 KB Output is partially correct
10 Partially correct 821 ms 1020 KB Output is partially correct
11 Partially correct 815 ms 1088 KB Output is partially correct
12 Partially correct 835 ms 984 KB Output is partially correct
13 Partially correct 833 ms 900 KB Output is partially correct
14 Correct 6 ms 344 KB Output is correct
15 Incorrect 1 ms 344 KB Incorrect
16 Halted 0 ms 0 KB -