oj.uz

Submission #1060389

# Submission time Handle Problem Language Result Execution time Memory
1060389 2024-08-15T13:36:53 Z mychecksedad Longest Trip (IOI23_longesttrip) C++17
15 / 100
 293 ms 600 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);
  
  deque<int> a, b;
  a.pb(0);
  for(int i = 1; i < n; ++i){
    if(are_connected(vi{a[0]}, vi{i})){
      a.push_front(i);
    }else if(are_connected(vi{a.back()}, vi{i})){
      a.pb(i);
    }else{
      if(b.empty()) b.pb(i);
      else{
        if(are_connected(vi{b[0]}, vi{i})){
          b.push_front(i);
        }else if(are_connected(vi{b.back()}, vi{i})){
          b.pb(i);
        }else{
          if(are_connected(vi{a.back()}, vi{b[0]})){
            for(int x: b) a.pb(x);
            b.clear();
            b.pb(i);
          }else{
            assert(false);
          }
        }
      }
    }
  }
  if(b.size()>a.size())swap(a,b);

  int u = -1, v;

  while(a.size() < n){
    if(are_connected(vi{a[0]}, vi{a.back()}) == 0){
      if(are_connected(vi{a[0]}, vi{b.back()}) == 1){
        a.push_front(b.back());
        b.pop_back();
      }else{
        a.pb(b.back());
        b.pop_back();
      }
    }else{
      if(u == -1){
        for(int i = 0; i < a.size(); ++i){
          for(int j = i + 1; j < a.size(); ++j){
            if(are_connected(vi{a[i]}, vi{a[j]}) == 0){
              u = a[i], v = a[j];
              break;
            }
          }
          if(u != -1) break;
        }
      }
      if(u == -1){
        vi res(all(a));
        return res;
      }
      if(are_connected(vi{b.back()}, vi{u}) == 1){
        int cc = 0;
        while(a.front() != u){
          int x = a.front();
          a.pop_front();
          a.pb(x);
          if(cc>n) assert(false);
          ++cc;
        }
        a.push_front(b.back());
        b.pop_back();
      }else{
        int cc = 0;
        while(a.front() != v){
          int x = a.front();
          a.pop_front();
          a.pb(x);
          ++cc;
          if(cc>n) assert(false);
        }
        a.push_front(b.back());
        b.pop_back();
      }
    }
  }
  vi res(all(a));
  return res;
}

Compilation message

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:80:18: warning: comparison of integer expressions of different signedness: 'std::deque<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   80 |   while(a.size() < n){
      |         ~~~~~~~~~^~~
longesttrip.cpp:91:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::deque<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |         for(int i = 0; i < a.size(); ++i){
      |                        ~~^~~~~~~~~~
longesttrip.cpp:92:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::deque<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   92 |           for(int j = i + 1; j < a.size(); ++j){
      |                              ~~^~~~~~~~~~

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 344 KB Output is correct

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 344 KB Output is correct
3 Correct 0 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 6 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 5 ms 344 KB Output is correct
5 Correct 5 ms 344 KB Output is correct
6 Correct 5 ms 344 KB Output is correct
7 Correct 4 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 6 ms 600 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 7 ms 344 KB Output is correct
13 Correct 5 ms 344 KB Output is correct

Subtask #3
0.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 5 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 5 ms 344 KB Output is correct
5 Correct 5 ms 344 KB Output is correct
6 Correct 7 ms 344 KB Output is correct
7 Correct 6 ms 344 KB Output is correct
8 Correct 5 ms 344 KB Output is correct
9 Correct 6 ms 344 KB Output is correct
10 Correct 6 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 5 ms 344 KB Output is correct
14 Correct 10 ms 344 KB Output is correct
15 Correct 14 ms 344 KB Output is correct
16 Correct 9 ms 344 KB Output is correct
17 Correct 10 ms 344 KB Output is correct
18 Correct 8 ms 344 KB Output is correct
19 Correct 6 ms 344 KB Output is correct
20 Correct 6 ms 344 KB Output is correct
21 Correct 6 ms 428 KB Output is correct
22 Correct 6 ms 344 KB Output is correct
23 Correct 6 ms 344 KB Output is correct
24 Correct 8 ms 344 KB Output is correct
25 Correct 12 ms 344 KB Output is correct
26 Correct 8 ms 344 KB Output is correct
27 Correct 22 ms 344 KB Output is correct
28 Correct 23 ms 344 KB Output is correct
29 Correct 29 ms 344 KB Output is correct
30 Correct 203 ms 344 KB Output is correct
31 Correct 123 ms 344 KB Output is correct
32 Correct 58 ms 344 KB Output is correct
33 Correct 293 ms 344 KB Output is correct
34 Correct 286 ms 344 KB Output is correct
35 Correct 284 ms 344 KB Output is correct
36 Incorrect 194 ms 344 KB too many calls
37 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 5 ms 344 KB Output is correct
4 Correct 5 ms 344 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 -