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Submission #1078985

# Submission time Handle Problem Language Result Execution time Memory
1078985 2024-08-28T09:04:04 Z Gromp15 Rarest Insects (IOI22_insects) C++17
0 / 100
 1 ms 344 KB 
#include <bits/stdc++.h>
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#include "insects.h"
using namespace std;
template<typename T> bool ckmin(T &a, const T &b) { return a > b ? a = b, 1 : 0; }
template<typename T> bool ckmax(T &a, const T &b) { return a < b ? a = b, 1 : 0; }

int min_cardinality(int N) {
	vector<int> idx(N);
	iota(all(idx), 0);
	shuffle(all(idx), mt19937(1498371));
	vector<int> groups{idx[0]};
	move_inside(idx[0]);
	for (int i = 1; i < N; i++) {
		move_inside(idx[i]);
		if (press_button() > 1) move_outside(idx[i]);
		else groups.push_back(idx[i]);
	}
	for (int x : groups) move_outside(x);
	int ans = 1e9;
	auto solve = [&](auto&& s, vector<int> v, vector<int> pot) -> void {
		if (sz(v) == 1) {
			ckmin(ans, sz(pot)); return;
		}
		int l = 2, r = sz(pot) / sz(v), ans2 = 1;
		vector<int> got = groups;
		while (l <= r) {
			int mid = (l+r)/2;
			for (int x : pot) {
				if (find(all(got), x) != got.end()) { 
					continue;
				}
				move_inside(x);
				if (press_button() > mid) move_outside(x);
				else got.push_back(x);
			}
			if (sz(got) == mid * sz(v)) { 
				ans2 = mid, l = mid+1;
			}
			else { 
				r = mid-1;
				for (int x : got) move_outside(x);
				swap(pot, got);
				got.clear();
			}
		}
		ckmin(ans, ans2);
	};
	solve(solve, groups, idx);
	return ans;
}

Subtask #1
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 Incorrect 0 ms 344 KB Wrong answer.
5 Halted 0 ms 0 KB -

Subtask #2
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 Incorrect 0 ms 344 KB Wrong answer.
5 Halted 0 ms 0 KB -

Subtask #3
0 / 75.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Wrong answer.
2 Halted 0 ms 0 KB -