Submission #1062465

#	Time	Username	Problem	Language	Result	Execution time	Memory
1062465		mindiyak	Rarest Insects (IOI22_insects)	C++17	10 / 100	245 ms	600 KiB

insects

#include "insects.h"
#pragma GCC optimize("O1,O2,O3,Ofast,unroll-loops")
#include <bits/stdc++.h>
#include <string>
#include <iostream>
#include <cmath>
#include <numeric>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> pi;
typedef pair<int, int> pl;
typedef pair<ld, ld> pd;
typedef vector<int> vi;
typedef vector<bool> vb;
typedef vector<vector<int>> vvi;
typedef vector<ld> vd;
typedef vector<ll> vl;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
#define FOR(i, a, b) for (int i = a; i < (b); i++)
#define F0R(i, a) for (int i = 0; i < (a); i++)
#define FORd(i, a, b) for (int i = (b)-1; i >= a; i--)
#define F0Rd(i, a) for (int i = (a)-1; i >= 0; i--)
#define trav(a, x) for (auto &a : x)
#define uid(a, b) uniform_int_distribution<int>(a, b)(rng)
#define len(x) (int)(x).size()
#define mp make_pair
#define pb push_back
#define F first
#define nl endl
#define S second
#define lb lower_bound
#define ub upper_bound
#define aint(x) x.begin(), x.end()
#define raint(x) x.rbegin(), x.rend()
#define ins insert
const int MOD = 1000000007;

vi visited;

int min_cardinality(int N) {
  visited = vi(N,0);
  int ans = 1e9;

  FOR(i,0,N){
    set<int> arr;
    FOR(j,0,N){
      if(visited[j])continue;
      move_inside(j);
      arr.insert(j);
      if(arr.size() == 1)continue;
      int val = press_button();

      // for(int a:arr)cerr << a << " ";
      // cerr << " -> " << val << endl;

      if(val != arr.size()){
        move_outside(j);
        arr.erase(j);
      }
    }
    for(int a:arr){
      // cerr << a << " ";
      move_outside(a);
      visited[a] = 1;
    }
    
    if(arr.size() == 0)continue;

    // cerr << endl;
    
    ans = min(ans,int(arr.size()));
    if(ans == 1)return 1;
  }
  return ans;
}

Compilation message (stderr)

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:59:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::set<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |       if(val != arr.size()){
      |          ~~~~^~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 15
• Subtask 3: 0 / 75