oj.uz

Submission #830930

# Submission time Handle Problem Language Result Execution time Memory
830930 2023-08-19T13:01:48 Z FatihSolak Rarest Insects (IOI22_insects) C++17
100 / 100
 49 ms 328 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 num = 0;
		for(int i = 0;i<N;i++){
			num += !ban[i];
		}
		r = min(r,ext + num/dif);
		int m = (l + r + 1)/2;
		if(now < m-ext){
			for(int i = 0;i<N && v.size() != (m-ext) * dif;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 && v.size() != (m-ext) * dif;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:83:34: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   83 |    for(int i = 0;i<N && v.size() != (m-ext) * dif;i++){
      |                         ~~~~~~~~~^~~~~~~~~~~~~~~~
insects.cpp:96:34: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   96 |    for(int i = 0;i<N && v.size() != (m-ext) * dif;i++){
      |                         ~~~~~~~~~^~~~~~~~~~~~~~~~
insects.cpp:104:15: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  104 |   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 4 ms 208 KB Output is correct
9 Correct 4 ms 208 KB Output is correct
10 Correct 3 ms 208 KB Output is correct
11 Correct 1 ms 208 KB Output is correct
12 Correct 3 ms 208 KB Output is correct
13 Correct 2 ms 208 KB Output is correct
14 Correct 4 ms 208 KB Output is correct
15 Correct 3 ms 208 KB Output is correct
16 Correct 3 ms 208 KB Output is correct
17 Correct 4 ms 208 KB Output is correct
18 Correct 4 ms 208 KB Output is correct
19 Correct 4 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 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 4 ms 208 KB Output is correct
9 Correct 4 ms 208 KB Output is correct
10 Correct 3 ms 208 KB Output is correct
11 Correct 1 ms 208 KB Output is correct
12 Correct 3 ms 208 KB Output is correct
13 Correct 2 ms 208 KB Output is correct
14 Correct 4 ms 208 KB Output is correct
15 Correct 3 ms 208 KB Output is correct
16 Correct 3 ms 208 KB Output is correct
17 Correct 4 ms 208 KB Output is correct
18 Correct 4 ms 208 KB Output is correct
19 Correct 4 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 2 ms 208 KB Output is correct
23 Correct 6 ms 208 KB Output is correct
24 Correct 7 ms 312 KB Output is correct
25 Correct 15 ms 208 KB Output is correct
26 Correct 17 ms 312 KB Output is correct
27 Correct 13 ms 208 KB Output is correct
28 Correct 9 ms 208 KB Output is correct
29 Correct 21 ms 208 KB Output is correct
30 Correct 19 ms 312 KB Output is correct
31 Correct 18 ms 304 KB Output is correct
32 Correct 22 ms 208 KB Output is correct
33 Correct 19 ms 208 KB Output is correct
34 Correct 19 ms 208 KB Output is correct
35 Correct 13 ms 308 KB Output is correct
36 Correct 21 ms 208 KB Output is correct
37 Correct 19 ms 208 KB Output is correct
38 Correct 25 ms 208 KB Output is correct
39 Correct 13 ms 308 KB Output is correct
40 Correct 13 ms 208 KB Output is correct
41 Correct 9 ms 312 KB Output is correct

Subtask #3
75.0 / 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 0 ms 208 KB Output is correct
7 Correct 7 ms 208 KB Output is correct
8 Correct 17 ms 208 KB Output is correct
9 Correct 25 ms 304 KB Output is correct
10 Correct 48 ms 208 KB Output is correct
11 Correct 33 ms 208 KB Output is correct
12 Correct 19 ms 316 KB Output is correct
13 Correct 35 ms 208 KB Output is correct
14 Correct 38 ms 208 KB Output is correct
15 Correct 28 ms 208 KB Output is correct
16 Correct 36 ms 208 KB Output is correct
17 Correct 30 ms 304 KB Output is correct
18 Correct 34 ms 296 KB Output is correct
19 Correct 39 ms 304 KB Output is correct
20 Correct 47 ms 308 KB Output is correct
21 Correct 47 ms 208 KB Output is correct
22 Correct 25 ms 328 KB Output is correct
23 Correct 35 ms 308 KB Output is correct
24 Correct 34 ms 296 KB Output is correct
25 Correct 17 ms 308 KB Output is correct
26 Correct 12 ms 312 KB Output is correct
27 Correct 29 ms 304 KB Output is correct
28 Correct 36 ms 292 KB Output is correct
29 Correct 30 ms 208 KB Output is correct
30 Correct 17 ms 308 KB Output is correct
31 Correct 49 ms 296 KB Output is correct
32 Correct 49 ms 208 KB Output is correct
33 Correct 37 ms 316 KB Output is correct
34 Correct 44 ms 296 KB Output is correct
35 Correct 17 ms 208 KB Output is correct
36 Correct 41 ms 312 KB Output is correct
37 Correct 28 ms 308 KB Output is correct
38 Correct 45 ms 304 KB Output is correct
39 Correct 40 ms 292 KB Output is correct
40 Correct 27 ms 292 KB Output is correct
41 Correct 41 ms 208 KB Output is correct
42 Correct 41 ms 292 KB Output is correct
43 Correct 10 ms 208 KB Output is correct
44 Correct 29 ms 208 KB Output is correct
45 Correct 34 ms 208 KB Output is correct
46 Correct 20 ms 208 KB Output is correct
47 Correct 27 ms 300 KB Output is correct
48 Correct 27 ms 316 KB Output is correct