Submission #725978

#	Time	Username	Problem	Language	Result	Execution time	Memory
725978		Nelt	Rarest Insects (IOI22_insects)	C++17	10 / 100	389 ms	328 KiB

insects

#include "insects.h"

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,avx2,fma")

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

/* DEFINES */
#define S second
#define F first
#define ll long long
#define ull unsigned long long
#define ld long double
#define npos ULLONG_MAX
#define INF LLONG_MAX
#define vv(a) vector<a>
#define pp(a, b) pair<a, b>
#define pq(a) priority_queue<a>
#define qq(a) queue<a>
#define ss(a) set<a>
#define mm(a, b) map<a, b>
#define ump(a, b) unordered_map<a, b>
#define sync                    \
  ios_base::sync_with_stdio(0); \
  cin.tie(0);                   \
  cout.tie(0);
#define elif else if
#define endl "\n"
#define allc(a) begin(a), end(a)
#define all(a) a, a + sizeof(a) / sizeof(a[0])
#define pb push_back
#define logi(a) __lg(a)
#define sqrt(a) sqrtl(a)
#define mpr make_pair
#define ins insert
using namespace std;
using namespace __gnu_pbds;
using namespace __cxx11;
typedef char chr;
typedef basic_string<chr> str;
template <typename T, typename key = less<T>>
using ordered_set = tree<T, null_type, key, rb_tree_tag, tree_order_statistics_node_update>;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int min_cardinality(int n)
{
    vv(pp(ll, ll)) v;
    ll a, b;
    bool flg = 0;
    for (ll i = 0; i < n; i++)
    {
        move_inside(i);
        ll j;
        for (j = 0; j < v.size(); j++)
        {
            a = v[j].S;
            move_inside(a);
            b = press_button();
            move_outside(a);
            if (b == 2)
            {
                v[j].F++;
                break;
            }
        }
        if (j == v.size())
            v.pb(mpr(1, i));
        move_outside(i);
    }
    return min_element(allc(v))->F;
}

Compilation message (stderr)

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:56:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |         for (j = 0; j < v.size(); j++)
      |                     ~~^~~~~~~~~~
insects.cpp:68:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |         if (j == v.size())
      |             ~~^~~~~~~~~~~
insects.cpp:51:10: warning: unused variable 'flg' [-Wunused-variable]
   51 |     bool flg = 0;
      |          ^~~

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