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Submission #830678

# Submission time Handle Problem Language Result Execution time Memory
830678 2023-08-19T09:14:37 Z caganyanmaz Rarest Insects (IOI22_insects) C++17
10 / 100
 116 ms 468 KB 
#include <bits/stdc++.h>
#include "insects.h"
#define pb push_back
using namespace std;

//#include "../debug.h"
#define debug(x...) void(42)

constexpr static int BLOCK = 50;

int n;
set<int> basis;

bool check(int val)
{
	vector<int> ci;
	for (int i = 0; i < n; i++)
	{
		if (basis.find(i) != basis.end())
			continue;
		move_inside(i);
		ci.pb(i);
		if (press_button() > val)
		{
			move_outside(i);
			ci.pop_back();
		}
	}
	return ci.size() == (val-1) * basis.size();
}

int test_a()
{
	int l = 1, r = 1 + n / basis.size();
	while (r - l > 1)
	{
		int m = l+r>>1;
		if(check(m))
			l = m;
		else
			r = m;
	}
	return l;
}

vector<int> bs;
set<int> machine;

int get_min(int l, int r, vector<int>& v)
{
	if (r - l == 1)
	{
		debug(l, v);
		return v.size()+1;
	}
	int m = l+r>>1;
	for (int i = l; i < m; i++)
	{
		if (machine.find(bs[i]) != machine.end())
			continue;
		machine.insert(bs[i]);
		move_inside(bs[i]);
	}
	for (int i = m; i < r; i++)
	{
		if (machine.find(bs[i]) == machine.end())
			continue;
		machine.erase(bs[i]);
		move_outside(bs[i]);
	}
	vector<int> lv, rv;
	for (int i : v)
	{
		move_inside(i);
		if (press_button() > 1)
			lv.pb(i);
		else
			rv.pb(i);
		move_outside(i);
	}
	int lres = get_min(l, m, lv);
	int rres = get_min(m, r, rv);
	return min(lres, rres);

}

int test_b()
{
	for (int i : basis)
	{
		bs.pb(i);
		machine.insert(i);
	}
	vector<int> v;
	for (int i = 0; i < n; i++)
		if (basis.find(i) == basis.end())
			v.pb(i);
	return get_min(0, bs.size(), v);
}

int min_cardinality(int N)
{
	n = N;
	for (int i = 0; i < n; i++)
	{
		move_inside(i);
		if (press_button() > 1)
			move_outside(i);
		else
			basis.insert(i);
	}	
	if (basis.size() > BLOCK)
		return test_a();
	else
		return test_b();
	
}

Compilation message

insects.cpp: In function 'int test_a()':
insects.cpp:37:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   37 |   int m = l+r>>1;
      |           ~^~
insects.cpp: In function 'int get_min(int, int, std::vector<int>&)':
insects.cpp:56:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   56 |  int m = l+r>>1;
      |          ~^~

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 2 ms 208 KB Output is correct
8 Correct 7 ms 208 KB Output is correct
9 Correct 7 ms 208 KB Output is correct
10 Correct 3 ms 308 KB Output is correct
11 Correct 1 ms 208 KB Output is correct
12 Correct 4 ms 208 KB Output is correct
13 Correct 9 ms 300 KB Output is correct
14 Correct 4 ms 208 KB Output is correct
15 Correct 7 ms 208 KB Output is correct
16 Correct 8 ms 208 KB Output is correct
17 Correct 5 ms 208 KB Output is correct
18 Correct 7 ms 304 KB Output is correct
19 Correct 4 ms 208 KB Output is correct
20 Correct 10 ms 300 KB Output is correct
21 Correct 3 ms 208 KB Output is correct
22 Correct 2 ms 208 KB Output is correct

Subtask #2
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 2 ms 208 KB Output is correct
8 Correct 7 ms 208 KB Output is correct
9 Correct 7 ms 208 KB Output is correct
10 Correct 3 ms 308 KB Output is correct
11 Correct 1 ms 208 KB Output is correct
12 Correct 4 ms 208 KB Output is correct
13 Correct 9 ms 300 KB Output is correct
14 Correct 4 ms 208 KB Output is correct
15 Correct 7 ms 208 KB Output is correct
16 Correct 8 ms 208 KB Output is correct
17 Correct 5 ms 208 KB Output is correct
18 Correct 7 ms 304 KB Output is correct
19 Correct 4 ms 208 KB Output is correct
20 Correct 10 ms 300 KB Output is correct
21 Correct 3 ms 208 KB Output is correct
22 Correct 2 ms 208 KB Output is correct
23 Correct 5 ms 300 KB Output is correct
24 Correct 9 ms 360 KB Output is correct
25 Correct 47 ms 292 KB Output is correct
26 Correct 54 ms 208 KB Output is correct
27 Correct 7 ms 296 KB Output is correct
28 Correct 8 ms 308 KB Output is correct
29 Correct 25 ms 296 KB Output is correct
30 Correct 52 ms 292 KB Output is correct
31 Correct 24 ms 300 KB Output is correct
32 Correct 26 ms 292 KB Output is correct
33 Correct 33 ms 276 KB Output is correct
34 Correct 31 ms 208 KB Output is correct
35 Correct 34 ms 292 KB Output is correct
36 Correct 24 ms 328 KB Output is correct
37 Correct 56 ms 296 KB Output is correct
38 Incorrect 33 ms 300 KB Wrong answer.
39 Halted 0 ms 0 KB -

Subtask #3
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 17 ms 292 KB Output is correct
8 Correct 11 ms 468 KB Output is correct
9 Partially correct 71 ms 308 KB Output is partially correct
10 Partially correct 64 ms 292 KB Output is partially correct
11 Correct 36 ms 288 KB Output is correct
12 Correct 20 ms 312 KB Output is correct
13 Partially correct 24 ms 292 KB Output is partially correct
14 Partially correct 113 ms 300 KB Output is partially correct
15 Partially correct 60 ms 276 KB Output is partially correct
16 Partially correct 59 ms 308 KB Output is partially correct
17 Partially correct 77 ms 208 KB Output is partially correct
18 Partially correct 64 ms 288 KB Output is partially correct
19 Partially correct 79 ms 316 KB Output is partially correct
20 Partially correct 72 ms 320 KB Output is partially correct
21 Partially correct 116 ms 300 KB Output is partially correct
22 Incorrect 57 ms 208 KB Wrong answer.
23 Halted 0 ms 0 KB -