Submission #633173

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
633173	2022-08-21T18:28:37 Z	Joshua_Andersson	Rarest Insects (IOI22_insects)	C++17	83.97 / 100	102 ms	556 KB

insects

#include <bits/stdc++.h>
using namespace std;


typedef pair<int, int> p2;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<p2> vp2;

#define rep(var,high) for(int var=0;var<high;var++)
#define repe(var,container) for(auto& var : container)

#define local 0

#if local
int N = 8;
map<int, int> insidemachine;
bool hasinit = false;
vi bois(N);
void init()
{
	return;
	if (hasinit) return;
	hasinit = true;
	//rep(i, N) bois[i] = rand() % N;
	bois[0] = 1;
	bois[1] = 1;
	bois[2] = 1;
	bois[3] = 2;
	bois[4] = 2;
	bois[5] = 2;
	bois[6] = 2;
	bois[7] = 2;
}
void move_inside(int i) { init(); insidemachine[bois[i]]++; }
void move_outside(int i) { if (insidemachine[bois[i]]) insidemachine[bois[i]]--; }
int press_button()
{
	int ret = 0;
	repe(el, insidemachine)	ret = max(ret, el.second);
	return ret;
}

int judgeans()
{
	int ret = 100000000;
	repe(el, insidemachine)	if (el.second!=0) ret = min(ret, el.second);
	return ret;
}
#else
void move_inside(int i);
void move_outside(int i);
int press_button();
#endif


int min_cardinality(int n)
{


	int col = 0;

	vi inside(n);

	int types = 0;

	rep(i, n)
	{
		
		move_inside(i);
		inside[i] = true;
		types++;

		if (press_button() > 1)
		{
			move_outside(i);
			inside[i] = false;
			types--;
		}
	}
	rep(i, n) if (inside[i]) move_outside(i);
	if (types == 1) return n;

	int high = n;
	int low = 1;

	vi isinside(n);
	int insidemaballs = 0;

	set<int> possible;
	rep(i, n) possible.insert(i);

	while (true)
	{
		int x = (high + low) / 2;
		bool works = false;
		if (n>=types*x)
		{
			

			repe(i, possible)
			{
				if (isinside[i]) continue;
				move_inside(i);
				isinside[i] = true;

				insidemaballs++;

				if (press_button() > x)
				{
					move_outside(i);
					isinside[i] = false;
					insidemaballs--;
				}

				if (insidemaballs>=types*x)
				{
					break;
				}
			}
			
			if (insidemaballs == types * x) works = true;

			if (works)
			{
				// Keep insects inside
			}
			if (!works)
			{
				rep(i, n)
				{
					if (!isinside[i])
					{
						possible.erase(i);
					}
					else
					{
						move_outside(i);
					}
				}
				isinside = vi(n, false);
				insidemaballs = 0;
			}
		}
		
		

		// If they are all greater than or equal to ans, the answer is larger than x
		
		if (works)
		{
			low = x;
		}
		else
		{
			high = x;
		}

		if (low+1==high)
		{
			return low;
		}
	}

	//return colorcnt[0];
}

#if local
int main()
{
	rep(i, 100000)
	{
		N = 2+rand() % 100;
		//bois = { 2, 0, 0 ,0 ,2 ,0 ,0 };
		//N = bois.size();
		bois=vi(N);
		rep(i, N) bois[i] = rand() % N;
		insidemachine = map<int, int>();

		rep(i, N) insidemachine[bois[i]]++;
		int jans = 100000000;
		repe(el, insidemachine)	if (el.second != 0) jans = min(jans, el.second);
		insidemachine = map<int, int>();
		

		if (min_cardinality(N)!=jans)
		{
			cout << "ligma:; ";
			rep(i, N)
			{
				cout << bois[i] << ", ";
			}
			cout << "\n\n";
			__debugbreak();
		}
	}
}
#endif

Compilation message

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:61:6: warning: unused variable 'col' [-Wunused-variable]
   61 |  int col = 0;
      |      ^~~

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	1 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	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	6 ms	208 KB	Output is correct
14	Correct	8 ms	208 KB	Output is correct
15	Correct	5 ms	208 KB	Output is correct
16	Correct	9 ms	208 KB	Output is correct
17	Correct	6 ms	208 KB	Output is correct
18	Correct	7 ms	300 KB	Output is correct
19	Correct	3 ms	208 KB	Output is correct
20	Correct	4 ms	208 KB	Output is correct
21	Correct	4 ms	208 KB	Output is correct
22	Correct	2 ms	296 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	1 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	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	6 ms	208 KB	Output is correct
14	Correct	8 ms	208 KB	Output is correct
15	Correct	5 ms	208 KB	Output is correct
16	Correct	9 ms	208 KB	Output is correct
17	Correct	6 ms	208 KB	Output is correct
18	Correct	7 ms	300 KB	Output is correct
19	Correct	3 ms	208 KB	Output is correct
20	Correct	4 ms	208 KB	Output is correct
21	Correct	4 ms	208 KB	Output is correct
22	Correct	2 ms	296 KB	Output is correct
23	Correct	11 ms	208 KB	Output is correct
24	Correct	10 ms	336 KB	Output is correct
25	Correct	16 ms	328 KB	Output is correct
26	Correct	44 ms	336 KB	Output is correct
27	Correct	25 ms	296 KB	Output is correct
28	Correct	8 ms	296 KB	Output is correct
29	Correct	31 ms	328 KB	Output is correct
30	Correct	30 ms	340 KB	Output is correct
31	Correct	36 ms	340 KB	Output is correct
32	Correct	54 ms	556 KB	Output is correct
33	Correct	47 ms	280 KB	Output is correct
34	Correct	50 ms	296 KB	Output is correct
35	Correct	27 ms	296 KB	Output is correct
36	Correct	38 ms	328 KB	Output is correct
37	Correct	39 ms	332 KB	Output is correct
38	Correct	34 ms	336 KB	Output is correct
39	Correct	28 ms	336 KB	Output is correct
40	Correct	8 ms	300 KB	Output is correct
41	Correct	9 ms	300 KB	Output is correct

Subtask #3

58.97 / 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	1 ms	208 KB	Output is correct
6	Correct	1 ms	208 KB	Output is correct
7	Correct	20 ms	208 KB	Output is correct
8	Correct	27 ms	300 KB	Output is correct
9	Correct	41 ms	328 KB	Output is correct
10	Partially correct	68 ms	284 KB	Output is partially correct
11	Partially correct	69 ms	284 KB	Output is partially correct
12	Correct	40 ms	288 KB	Output is correct
13	Partially correct	60 ms	296 KB	Output is partially correct
14	Partially correct	49 ms	388 KB	Output is partially correct
15	Partially correct	88 ms	388 KB	Output is partially correct
16	Partially correct	79 ms	388 KB	Output is partially correct
17	Partially correct	102 ms	396 KB	Output is partially correct
18	Partially correct	84 ms	508 KB	Output is partially correct
19	Partially correct	75 ms	388 KB	Output is partially correct
20	Partially correct	71 ms	396 KB	Output is partially correct
21	Partially correct	80 ms	412 KB	Output is partially correct
22	Partially correct	62 ms	392 KB	Output is partially correct
23	Partially correct	58 ms	388 KB	Output is partially correct
24	Correct	48 ms	388 KB	Output is correct
25	Correct	42 ms	300 KB	Output is correct
26	Correct	18 ms	300 KB	Output is correct
27	Correct	44 ms	296 KB	Output is correct
28	Correct	38 ms	300 KB	Output is correct
29	Partially correct	55 ms	432 KB	Output is partially correct
30	Partially correct	48 ms	300 KB	Output is partially correct
31	Partially correct	66 ms	412 KB	Output is partially correct
32	Partially correct	90 ms	484 KB	Output is partially correct
33	Partially correct	47 ms	328 KB	Output is partially correct
34	Partially correct	75 ms	296 KB	Output is partially correct
35	Correct	33 ms	384 KB	Output is correct
36	Correct	41 ms	288 KB	Output is correct
37	Partially correct	81 ms	416 KB	Output is partially correct
38	Partially correct	84 ms	400 KB	Output is partially correct
39	Correct	45 ms	300 KB	Output is correct
40	Correct	37 ms	288 KB	Output is correct
41	Correct	35 ms	328 KB	Output is correct
42	Correct	29 ms	300 KB	Output is correct
43	Correct	14 ms	208 KB	Output is correct
44	Correct	42 ms	392 KB	Output is correct
45	Correct	45 ms	284 KB	Output is correct
46	Correct	44 ms	304 KB	Output is correct
47	Correct	35 ms	296 KB	Output is correct
48	Correct	39 ms	288 KB	Output is correct