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Submission #830910

# Submission time Handle Problem Language Result Execution time Memory
830910 2023-08-19T12:50:41 Z FatihSolak Rarest Insects (IOI22_insects) C++17
99.89 / 100
 55 ms 552 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 <= 3){
		vector<bool> found(N,0);
		int mini = 1e9;
		int rem = N;
		for(int i = 0;i<N && dif > 1;i++){
			if(found[i] == 0){
				dif--;
				while(v.size())
					del3();
				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++;
						rem--;
					}
				}
				mini = min(mini,cnt);
			}
		}
		mini = min(mini,rem);
		return mini;
	}
	vector<int> ban(N,0);
	int l = 1,r = N/dif;
	int ext = 0;
	while(l < r){
		int m = (l + r + 1)/2;
		if(now < m-ext){
			for(int i = 0;i<N;i++){
				if(ban[i] == 0 && find(v.begin(),v.end(),i) == v.end()){
					add(i);
					if(now > m - ext)
						del2();
				}
			}
		}
		else{
			while(v.size()){
				del3();
			}
			now = 0;
			for(int i = 0;i<N;i++){
				if(ban[i] == 0 && find(v.begin(),v.end(),i) == v.end()){
					add(i);
					if(now > m - ext)
						del2();
				}
			}
		}
		if(v.size() == (m-ext) * dif){
			for(auto u:v){
				ban[u] = 1;
			}
			while(v.size())
				del3();
			now = 0;
			ext = m;
			l  = m;
		}
		else{
			r = m -1;
			for(int i = 0;i<N;i++){
				if(find(v.begin(),v.end(),i) == v.end()){
					ban[i] = 1;
				}
			}
		}
	}
	return l;
}

Compilation message

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:99:15: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   99 |   if(v.size() == (m-ext) * dif){
      |      ~~~~~~~~~^~~~~~~~~~~~~~~~
insects.cpp:20:7: warning: variable 'del' set but not used [-Wunused-but-set-variable]
   20 |  auto del = [&](){
      |       ^~~

Subtask #1
10.0 / 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 Correct 0 ms 208 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 5 ms 208 KB Output is correct
9 Correct 5 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 5 ms 208 KB Output is correct
13 Correct 4 ms 208 KB Output is correct
14 Correct 4 ms 208 KB Output is correct
15 Correct 5 ms 208 KB Output is correct
16 Correct 4 ms 208 KB Output is correct
17 Correct 4 ms 208 KB Output is correct
18 Correct 4 ms 292 KB Output is correct
19 Correct 4 ms 208 KB Output is correct
20 Correct 5 ms 208 KB Output is correct
21 Correct 3 ms 208 KB Output is correct
22 Correct 2 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 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 2 ms 208 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 5 ms 208 KB Output is correct
9 Correct 5 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 5 ms 208 KB Output is correct
13 Correct 4 ms 208 KB Output is correct
14 Correct 4 ms 208 KB Output is correct
15 Correct 5 ms 208 KB Output is correct
16 Correct 4 ms 208 KB Output is correct
17 Correct 4 ms 208 KB Output is correct
18 Correct 4 ms 292 KB Output is correct
19 Correct 4 ms 208 KB Output is correct
20 Correct 5 ms 208 KB Output is correct
21 Correct 3 ms 208 KB Output is correct
22 Correct 2 ms 208 KB Output is correct
23 Correct 9 ms 208 KB Output is correct
24 Correct 7 ms 292 KB Output is correct
25 Correct 17 ms 328 KB Output is correct
26 Correct 25 ms 296 KB Output is correct
27 Correct 12 ms 208 KB Output is correct
28 Correct 7 ms 208 KB Output is correct
29 Correct 10 ms 312 KB Output is correct
30 Correct 23 ms 208 KB Output is correct
31 Correct 22 ms 208 KB Output is correct
32 Correct 19 ms 208 KB Output is correct
33 Correct 14 ms 208 KB Output is correct
34 Correct 22 ms 208 KB Output is correct
35 Correct 19 ms 308 KB Output is correct
36 Correct 17 ms 208 KB Output is correct
37 Correct 17 ms 208 KB Output is correct
38 Correct 21 ms 312 KB Output is correct
39 Correct 21 ms 308 KB Output is correct
40 Correct 10 ms 208 KB Output is correct
41 Correct 7 ms 208 KB Output is correct

Subtask #3
74.89 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 ms 208 KB Output is correct
7 Correct 12 ms 208 KB Output is correct
8 Correct 13 ms 320 KB Output is correct
9 Correct 39 ms 308 KB Output is correct
10 Correct 37 ms 304 KB Output is correct
11 Correct 24 ms 208 KB Output is correct
12 Correct 15 ms 336 KB Output is correct
13 Correct 38 ms 208 KB Output is correct
14 Correct 45 ms 304 KB Output is correct
15 Correct 39 ms 308 KB Output is correct
16 Correct 42 ms 296 KB Output is correct
17 Correct 34 ms 292 KB Output is correct
18 Correct 54 ms 296 KB Output is correct
19 Partially correct 41 ms 208 KB Output is partially correct
20 Correct 53 ms 292 KB Output is correct
21 Correct 39 ms 304 KB Output is correct
22 Correct 44 ms 312 KB Output is correct
23 Correct 44 ms 304 KB Output is correct
24 Correct 34 ms 308 KB Output is correct
25 Correct 17 ms 316 KB Output is correct
26 Correct 16 ms 328 KB Output is correct
27 Correct 35 ms 308 KB Output is correct
28 Correct 55 ms 292 KB Output is correct
29 Partially correct 38 ms 208 KB Output is partially correct
30 Partially correct 39 ms 296 KB Output is partially correct
31 Correct 34 ms 304 KB Output is correct
32 Correct 50 ms 208 KB Output is correct
33 Correct 41 ms 304 KB Output is correct
34 Correct 50 ms 304 KB Output is correct
35 Partially correct 39 ms 208 KB Output is partially correct
36 Partially correct 25 ms 552 KB Output is partially correct
37 Correct 39 ms 208 KB Output is correct
38 Correct 48 ms 308 KB Output is correct
39 Correct 38 ms 304 KB Output is correct
40 Correct 51 ms 296 KB Output is correct
41 Partially correct 30 ms 304 KB Output is partially correct
42 Partially correct 36 ms 208 KB Output is partially correct
43 Correct 10 ms 308 KB Output is correct
44 Correct 35 ms 208 KB Output is correct
45 Correct 35 ms 296 KB Output is correct
46 Correct 27 ms 208 KB Output is correct
47 Correct 19 ms 316 KB Output is correct
48 Correct 22 ms 208 KB Output is correct