oj.uz

Submission #1079998

# Submission time Handle Problem Language Result Execution time Memory
1079998 2024-08-29T05:55:23 Z LittleOrange Rarest Insects (IOI22_insects) C++17
25 / 100
 231 ms 596 KB 
#include "insects.h"
#include<bits/stdc++.h>
using namespace std;
using ll = int;
struct dsu{
  vector<ll> p;
  dsu(ll n):p(n,-1){}
  ll g(ll i){
    return p[i]<0?i:p[i] = g(p[i]);
  }
  bool m(ll a, ll b){
    a = g(a),b = g(b);
    if (a==b) return false;
    if(p[a]>p[b]) swap(a,b);
    p[a] += p[b];
    p[b] = a;
    return true;
  }
};
int min_cardinality(int n) {
  mt19937_64 mt(random_device{}());
  vector<ll> a(n);
  iota(a.begin(),a.end(),0);
  dsu d(n);
  ll run = 1;
  while(run){
    run = 0;
    shuffle(a.begin(),a.end(),mt);
    vector<ll> v;
    for(ll i : a) if(d.p[i]<0) v.push_back(i);
    ll l = 0;
    for(ll i = 0;i<v.size();i++){
      move_inside(v[i]);
      if (i>0&&press_button()>1){
        do{
          move_outside(v[l++]);
        }while(press_button()>1);
        d.m(v[l-1],v[i]);
        run = 1;
      }
    }
    while(l<v.size())move_outside(v[l++]);
  }
  ll ans = -n;
  for(ll i : d.p) if(i<0)ans = max(ans,i);
  return -ans;
}

Compilation message

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:32:19: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |     for(ll i = 0;i<v.size();i++){
      |                  ~^~~~~~~~~
insects.cpp:42:12: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |     while(l<v.size())move_outside(v[l++]);
      |           ~^~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 2 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 8 ms 344 KB Output is correct
9 Correct 7 ms 344 KB Output is correct
10 Correct 2 ms 344 KB Output is correct
11 Correct 2 ms 344 KB Output is correct
12 Correct 4 ms 344 KB Output is correct
13 Correct 8 ms 344 KB Output is correct
14 Correct 6 ms 344 KB Output is correct
15 Correct 4 ms 344 KB Output is correct
16 Correct 4 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 20 ms 344 KB Output is correct
20 Correct 12 ms 344 KB Output is correct
21 Correct 11 ms 344 KB Output is correct
22 Correct 31 ms 344 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 2 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 8 ms 344 KB Output is correct
9 Correct 7 ms 344 KB Output is correct
10 Correct 2 ms 344 KB Output is correct
11 Correct 2 ms 344 KB Output is correct
12 Correct 4 ms 344 KB Output is correct
13 Correct 8 ms 344 KB Output is correct
14 Correct 6 ms 344 KB Output is correct
15 Correct 4 ms 344 KB Output is correct
16 Correct 4 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 20 ms 344 KB Output is correct
20 Correct 12 ms 344 KB Output is correct
21 Correct 11 ms 344 KB Output is correct
22 Correct 31 ms 344 KB Output is correct
23 Correct 7 ms 344 KB Output is correct
24 Correct 5 ms 344 KB Output is correct
25 Correct 70 ms 344 KB Output is correct
26 Correct 46 ms 344 KB Output is correct
27 Correct 9 ms 344 KB Output is correct
28 Correct 14 ms 344 KB Output is correct
29 Correct 18 ms 344 KB Output is correct
30 Correct 44 ms 344 KB Output is correct
31 Correct 23 ms 344 KB Output is correct
32 Correct 24 ms 344 KB Output is correct
33 Correct 26 ms 344 KB Output is correct
34 Correct 34 ms 344 KB Output is correct
35 Correct 35 ms 344 KB Output is correct
36 Correct 40 ms 344 KB Output is correct
37 Correct 73 ms 344 KB Output is correct
38 Correct 100 ms 344 KB Output is correct
39 Correct 127 ms 344 KB Output is correct
40 Correct 169 ms 340 KB Output is correct
41 Correct 165 ms 432 KB Output is correct

Subtask #3
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 19 ms 344 KB Output is correct
8 Correct 8 ms 440 KB Output is correct
9 Partially correct 145 ms 344 KB Output is partially correct
10 Partially correct 119 ms 344 KB Output is partially correct
11 Correct 27 ms 344 KB Output is correct
12 Correct 40 ms 448 KB Output is correct
13 Partially correct 34 ms 340 KB Output is partially correct
14 Partially correct 145 ms 444 KB Output is partially correct
15 Partially correct 50 ms 344 KB Output is partially correct
16 Partially correct 62 ms 340 KB Output is partially correct
17 Partially correct 72 ms 596 KB Output is partially correct
18 Partially correct 61 ms 344 KB Output is partially correct
19 Partially correct 77 ms 344 KB Output is partially correct
20 Partially correct 88 ms 344 KB Output is partially correct
21 Partially correct 170 ms 596 KB Output is partially correct
22 Partially correct 175 ms 596 KB Output is partially correct
23 Incorrect 231 ms 464 KB Too many queries.
24 Halted 0 ms 0 KB -