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Submission #830547

# Submission time Handle Problem Language Result Execution time Memory
830547 2023-08-19T07:54:54 Z tolbi Rarest Insects (IOI22_insects) C++17
0 / 100
 1 ms 208 KB 
#include <bits/stdc++.h>
using namespace std;
mt19937 ayahya(chrono::high_resolution_clock().now().time_since_epoch().count());
#include "insects.h"
int min_cardinality(int n) {
    function<int(int)> f;
    vector<int> hash(n);
    iota(hash.begin(), hash.end(), 0);
    for (int i = n-1; i >= 0; i--){
        swap(hash[i],hash[ayahya()%(i+1)]);
    }
    f = [&](int x)->int{
        int ans = 0;
        vector<int> crr;
        for (int i = 0; i < n; i++){
            crr.push_back(hash[i]);
            move_inside(hash[i]);
            if (press_button()>x){
                ans++;
                crr.pop_back();
                move_outside(hash[i]);
            }
        }
        for (int i = 0; i < crr.size(); ++i)
        {
            move_outside(crr[i]);
        }
        return ans;
    };
    int diff = n-f(1);
    int l = n/diff, r = n;
    while (l<r){
        int mid = l+(r-l+1)/2;
        if (f(mid)>n-(mid*diff)){
            r=mid-1;
        }
        else l = mid;
    }
    return l;
}

Compilation message

insects.cpp: In lambda function:
insects.cpp:24:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |         for (int i = 0; i < crr.size(); ++i)
      |                         ~~^~~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Incorrect 1 ms 208 KB Wrong answer.
6 Halted 0 ms 0 KB -

Subtask #2
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Incorrect 1 ms 208 KB Wrong answer.
6 Halted 0 ms 0 KB -

Subtask #3
0 / 75.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 208 KB Wrong answer.
2 Halted 0 ms 0 KB -