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Submission #830576

# Submission time Handle Problem Language Result Execution time Memory
830576 2023-08-19T08:09:11 Z FatihSolak Rarest Insects (IOI22_insects) C++17
76.8 / 100
 106 ms 436 KB 
#include "insects.h"
#include <bits/stdc++.h>
using namespace std;

int min_cardinality(int N){
	mt19937 rng(chrono::steady_clock().now().time_since_epoch().count());
	vector<int> ord;
	for(int i = 0;i<N;i++){
		ord.push_back(i);
	}
	shuffle(ord.begin(),ord.end(),rng);
	vector<int> v;
	int now = 0;
	int dif = 0;
	auto add = [&](int x){
		v.push_back(x);
		move_inside(ord[x]);
		now = press_button();
	};
	auto del = [&](){
		move_outside(ord[v.back()]);
		v.pop_back();
		now = press_button();
	};
	auto del2 = [&](){
		move_outside(ord[v.back()]);
		v.pop_back();
		now--;
	};
	auto del3 = [&](){
		move_outside(ord[v.back()]);
		v.pop_back();
	};
	add(0);
	dif = 1;
	for(int i = 1;i<N;i++){
		add(i);
		if(now == 2){
			del2();
		}
		else dif++;
	}
	if(dif == 1)
		return N;
	if(dif == 2){
		for(int i = 0;i<N;i++){
			if(find(v.begin(),v.end(),i) == v.end()){
				add(i);
			}
		}
		return N - now;
	}
	if(N/dif > (1<<5) && dif <= 9){
		vector<bool> found(N,0);
		int mini = 1e9;
		for(int i = 0;i<N;i++){
			if(found[i] == 0){
				while(v.size())
					del2();
				now = 0;
				int cnt = 0;
				for(int j = 0;j<N;j++){
					if(found[j])continue;
					add(j);
					if(now != cnt + 1){
						del3();
					}
					else{
						found[j] = 1;
						cnt++;
					}
				}
				mini = min(mini,cnt);
			}
		}
		return mini;
	}
	int l = 1,r = N/dif;
	while(l < r){
		int m = (l + r + 1)/2;
		int tmp = now;
		press_button();
		assert(now == tmp);
		if(now < m){
			for(int i = 0;i<N;i++){
				if(find(v.begin(),v.end(),i) == v.end()){
					add(i);
					if(now > m)
						del2();
				}
			}
		}
		else{
			while(now > m){
				del();
			}
			for(int i = 0;i<N;i++){
				if(find(v.begin(),v.end(),i) == v.end()){
					add(i);
					if(now > m)
						del2();
				}
			}
		}
		if(v.size() == m * dif){
			l  = m;
		}
		else r = m -1;
	}
	return l;
}

Compilation message

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:105:15: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  105 |   if(v.size() == m * dif){
      |      ~~~~~~~~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 3 ms 208 KB Output is correct
9 Correct 7 ms 208 KB Output is correct
10 Correct 3 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 6 ms 208 KB Output is correct
13 Correct 5 ms 208 KB Output is correct
14 Correct 5 ms 208 KB Output is correct
15 Correct 4 ms 208 KB Output is correct
16 Correct 4 ms 208 KB Output is correct
17 Correct 5 ms 208 KB Output is correct
18 Correct 7 ms 208 KB Output is correct
19 Correct 5 ms 208 KB Output is correct
20 Correct 4 ms 208 KB Output is correct
21 Correct 3 ms 208 KB Output is correct
22 Correct 1 ms 208 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 3 ms 208 KB Output is correct
9 Correct 7 ms 208 KB Output is correct
10 Correct 3 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 6 ms 208 KB Output is correct
13 Correct 5 ms 208 KB Output is correct
14 Correct 5 ms 208 KB Output is correct
15 Correct 4 ms 208 KB Output is correct
16 Correct 4 ms 208 KB Output is correct
17 Correct 5 ms 208 KB Output is correct
18 Correct 7 ms 208 KB Output is correct
19 Correct 5 ms 208 KB Output is correct
20 Correct 4 ms 208 KB Output is correct
21 Correct 3 ms 208 KB Output is correct
22 Correct 1 ms 208 KB Output is correct
23 Correct 7 ms 208 KB Output is correct
24 Correct 9 ms 208 KB Output is correct
25 Correct 25 ms 296 KB Output is correct
26 Correct 34 ms 300 KB Output is correct
27 Correct 17 ms 208 KB Output is correct
28 Correct 9 ms 208 KB Output is correct
29 Correct 23 ms 208 KB Output is correct
30 Correct 51 ms 208 KB Output is correct
31 Correct 24 ms 208 KB Output is correct
32 Correct 34 ms 208 KB Output is correct
33 Correct 31 ms 292 KB Output is correct
34 Correct 28 ms 208 KB Output is correct
35 Correct 21 ms 292 KB Output is correct
36 Correct 26 ms 208 KB Output is correct
37 Correct 23 ms 304 KB Output is correct
38 Correct 26 ms 208 KB Output is correct
39 Correct 26 ms 208 KB Output is correct
40 Correct 15 ms 292 KB Output is correct
41 Correct 9 ms 208 KB Output is correct

Subtask #3
51.8 / 75.0

# 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 Correct 0 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 17 ms 208 KB Output is correct
8 Correct 12 ms 208 KB Output is correct
9 Correct 36 ms 296 KB Output is correct
10 Partially correct 75 ms 296 KB Output is partially correct
11 Correct 30 ms 300 KB Output is correct
12 Correct 22 ms 208 KB Output is correct
13 Partially correct 39 ms 424 KB Output is partially correct
14 Partially correct 106 ms 292 KB Output is partially correct
15 Partially correct 47 ms 292 KB Output is partially correct
16 Partially correct 77 ms 296 KB Output is partially correct
17 Partially correct 58 ms 328 KB Output is partially correct
18 Partially correct 50 ms 208 KB Output is partially correct
19 Partially correct 68 ms 296 KB Output is partially correct
20 Partially correct 51 ms 292 KB Output is partially correct
21 Partially correct 78 ms 424 KB Output is partially correct
22 Partially correct 86 ms 208 KB Output is partially correct
23 Partially correct 55 ms 208 KB Output is partially correct
24 Correct 37 ms 208 KB Output is correct
25 Correct 15 ms 436 KB Output is correct
26 Correct 17 ms 208 KB Output is correct
27 Correct 45 ms 292 KB Output is correct
28 Correct 39 ms 208 KB Output is correct
29 Partially correct 49 ms 296 KB Output is partially correct
30 Partially correct 29 ms 300 KB Output is partially correct
31 Partially correct 50 ms 300 KB Output is partially correct
32 Partially correct 72 ms 208 KB Output is partially correct
33 Partially correct 89 ms 296 KB Output is partially correct
34 Partially correct 49 ms 208 KB Output is partially correct
35 Partially correct 48 ms 304 KB Output is partially correct
36 Partially correct 47 ms 208 KB Output is partially correct
37 Partially correct 76 ms 292 KB Output is partially correct
38 Partially correct 50 ms 296 KB Output is partially correct
39 Correct 36 ms 300 KB Output is correct
40 Correct 37 ms 296 KB Output is correct
41 Partially correct 57 ms 208 KB Output is partially correct
42 Partially correct 41 ms 292 KB Output is partially correct
43 Correct 10 ms 208 KB Output is correct
44 Correct 27 ms 208 KB Output is correct
45 Correct 31 ms 208 KB Output is correct
46 Correct 25 ms 316 KB Output is correct
47 Correct 26 ms 312 KB Output is correct
48 Correct 16 ms 316 KB Output is correct