oj.uz

Submission #1061049

# Submission time Handle Problem Language Result Execution time Memory
1061049 2024-08-16T05:57:38 Z mychecksedad Longest Trip (IOI23_longesttrip) C++17
40 / 100
 11 ms 852 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.back()}, vi{i})){
      a.pb(i);
    }else if(!b.empty() && are_connected(vi{b.back()}, vi{i})){
      b.pb(i);
    }else{
      if(b.empty()) b.pb(i);
      else{
        reverse(all(b));
        for(int x: b) a.pb(x);
        b.clear();
        b.pb(i);
      }
    }
    // for(int x:)
  }
  if(b.size()>a.size())swap(a,b);
 
  vi A(all(a));
  vi B(all(b));
 
  if(B.empty()) return A;
 
  if(are_connected(A, B) == 0){
    return A;
  }
 
  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){
        reverse(all(b));
        for(int x: b) a.push_front(x);
      }else{
        reverse(all(b));
        for(int x: b) a.pb(x);
      }
      break;
    }else{
      int ul = 0, ur = int(a.size()) - 1, ua = -1;
      while(ul <= ur){
        int um = ul+ur>>1;
        vi z;
        for(int j = 0; j <= um; ++j) z.pb(a[j]);
        if(are_connected(z, vi{b.back()})){
          ua = um;
          ur = um - 1;
        }else ul = um + 1;
      }
      if(ua == -1){
        vi res(all(a));
        return res;
      }
      u = a[ua];
      while(a.front() != u){
        int x = a.front();
        a.pop_front();
        a.pb(x);
      }
      reverse(all(b));
      for(int x: b) a.push_front(x);
      break;
    }
  }  vi res(all(a));
  return res;
}

Compilation message

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:80:17: 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:93:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   93 |         int um = ul+ur>>1;
      |                  ~~^~~
longesttrip.cpp:79:15: warning: unused variable 'v' [-Wunused-variable]
   79 |   int u = -1, v;
      |               ^

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 1 ms 420 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 5 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 6 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 7 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 436 KB Output is correct
12 Correct 5 ms 344 KB Output is correct
13 Correct 4 ms 344 KB Output is correct

Subtask #3
25.0 / 25.0

# 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 5 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 5 ms 344 KB Output is correct
6 Correct 8 ms 344 KB Output is correct
7 Correct 8 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 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
14 Correct 7 ms 344 KB Output is correct
15 Correct 7 ms 436 KB Output is correct
16 Correct 10 ms 344 KB Output is correct
17 Correct 10 ms 344 KB Output is correct
18 Correct 7 ms 344 KB Output is correct
19 Correct 7 ms 344 KB Output is correct
20 Correct 6 ms 344 KB Output is correct
21 Correct 5 ms 344 KB Output is correct
22 Correct 6 ms 448 KB Output is correct
23 Correct 11 ms 852 KB Output is correct
24 Correct 8 ms 344 KB Output is correct
25 Correct 9 ms 344 KB Output is correct
26 Correct 9 ms 344 KB Output is correct
27 Correct 8 ms 344 KB Output is correct
28 Correct 6 ms 344 KB Output is correct
29 Correct 7 ms 344 KB Output is correct
30 Correct 3 ms 344 KB Output is correct
31 Correct 7 ms 344 KB Output is correct
32 Correct 5 ms 344 KB Output is correct
33 Correct 6 ms 344 KB Output is correct
34 Correct 8 ms 344 KB Output is correct
35 Correct 6 ms 344 KB Output is correct
36 Correct 7 ms 344 KB Output is correct
37 Correct 5 ms 344 KB Output is correct
38 Correct 5 ms 344 KB Output is correct
39 Correct 6 ms 344 KB Output is correct
40 Correct 5 ms 344 KB Output is correct
41 Correct 8 ms 344 KB Output is correct
42 Correct 8 ms 344 KB Output is correct
43 Correct 6 ms 340 KB Output is correct
44 Correct 8 ms 340 KB Output is correct
45 Correct 11 ms 344 KB Output is correct
46 Correct 7 ms 344 KB Output is correct
47 Correct 6 ms 344 KB Output is correct
48 Correct 10 ms 432 KB Output is correct
49 Correct 8 ms 344 KB Output is correct
50 Correct 7 ms 444 KB Output is correct
51 Correct 9 ms 348 KB Output is correct
52 Correct 10 ms 348 KB Output is correct
53 Correct 6 ms 344 KB Output is correct
54 Correct 5 ms 356 KB Output is correct
55 Correct 6 ms 608 KB Output is correct
56 Correct 6 ms 352 KB Output is correct
57 Correct 7 ms 352 KB Output is correct
58 Correct 8 ms 348 KB Output is correct
59 Correct 11 ms 344 KB Output is correct
60 Correct 6 ms 344 KB Output is correct
61 Correct 6 ms 344 KB Output is correct
62 Correct 9 ms 344 KB Output is correct
63 Correct 7 ms 344 KB Output is correct
64 Correct 7 ms 344 KB Output is correct

Subtask #4
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 4 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 3 ms 344 KB Output is correct
6 Correct 8 ms 344 KB Output is correct
7 Correct 7 ms 344 KB Output is correct
8 Correct 6 ms 344 KB Output is correct
9 Correct 6 ms 344 KB Output is correct
10 Correct 6 ms 440 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 4 ms 344 KB Output is correct
13 Correct 5 ms 344 KB Output is correct
14 Correct 8 ms 344 KB Output is correct
15 Correct 8 ms 344 KB Output is correct
16 Correct 11 ms 344 KB Output is correct
17 Correct 6 ms 344 KB Output is correct
18 Correct 7 ms 344 KB Output is correct
19 Correct 7 ms 344 KB Output is correct
20 Correct 6 ms 344 KB Output is correct
21 Correct 7 ms 344 KB Output is correct
22 Correct 5 ms 340 KB Output is correct
23 Correct 8 ms 344 KB Output is correct
24 Correct 5 ms 344 KB Output is correct
25 Correct 9 ms 344 KB Output is correct
26 Correct 6 ms 344 KB Output is correct
27 Correct 7 ms 344 KB Output is correct
28 Correct 9 ms 344 KB Output is correct
29 Correct 7 ms 344 KB Output is correct
30 Correct 5 ms 344 KB Output is correct
31 Correct 6 ms 344 KB Output is correct
32 Correct 11 ms 344 KB Output is correct
33 Incorrect 0 ms 344 KB Incorrect
34 Halted 0 ms 0 KB -