Submission #827991

# Submission time Handle Problem Language Result Execution time Memory
827991 2023-08-17T00:53:05 Z arnold518 Rarest Insects (IOI22_insects) C++17
100 / 100
53 ms 336 KB
#include "insects.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 2000;

int A[MAXN+10], B[MAXN+10], P[MAXN+10];

int min_cardinality(int N)
{
	for(int i=0; i<N; i++) P[i]=i;
	random_shuffle(P, P+N);

	for(int i=0; i<N; i++)
	{
		move_inside(P[i]); A[i]=1;
		if(press_button()>1)
		{
			move_outside(P[i]); A[i]=0;
		}
	}
	int cnt=0;
	for(int i=0; i<N; i++) cnt+=A[i];
	for(int i=0; i<N; i++) if(A[i]) A[i]=0, B[i]=1;
	if(cnt==1) return N;
	if(cnt==2)
	{
		for(int i=0; i<N; i++) move_inside(P[i]);
		return N-press_button();
	}

	int lo=1, hi=N/cnt+1;
	int val=cnt;
	while(lo+1<hi)
	{
		int mid=lo+hi>>1, t=val;
		for(int i=0; i<N; i++)
		{
			if(t==mid*cnt) break;
			if(B[i]) continue;

			move_inside(P[i]); A[i]=1; t++;
			if(press_button()>mid)
			{
				move_outside(P[i]); A[i]=0; t--;
			}
		}

		if(t==mid*cnt)
		{
			lo=mid;
			for(int i=0; i<N; i++) if(!B[i] && A[i]) B[i]=1, A[i]=0, val++;
		}
		else
		{
			hi=mid;
			for(int i=0; i<N; i++) if(!B[i] && !A[i]) B[i]=2;
			for(int i=0; i<N; i++) if(A[i]) move_outside(P[i]), A[i]=0;
		}
	}
	return lo;
}

Compilation message

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:40:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   40 |   int mid=lo+hi>>1, t=val;
      |           ~~^~~
# 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 1 ms 308 KB Output is correct
6 Correct 2 ms 308 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 5 ms 208 KB Output is correct
9 Correct 6 ms 208 KB Output is correct
10 Correct 2 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 2 ms 208 KB Output is correct
14 Correct 4 ms 208 KB Output is correct
15 Correct 2 ms 304 KB Output is correct
16 Correct 5 ms 208 KB Output is correct
17 Correct 7 ms 312 KB Output is correct
18 Correct 2 ms 208 KB Output is correct
19 Correct 3 ms 208 KB Output is correct
20 Correct 6 ms 304 KB Output is correct
21 Correct 3 ms 308 KB Output is correct
22 Correct 3 ms 308 KB Output is correct
# 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 1 ms 308 KB Output is correct
6 Correct 2 ms 308 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 5 ms 208 KB Output is correct
9 Correct 6 ms 208 KB Output is correct
10 Correct 2 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 2 ms 208 KB Output is correct
14 Correct 4 ms 208 KB Output is correct
15 Correct 2 ms 304 KB Output is correct
16 Correct 5 ms 208 KB Output is correct
17 Correct 7 ms 312 KB Output is correct
18 Correct 2 ms 208 KB Output is correct
19 Correct 3 ms 208 KB Output is correct
20 Correct 6 ms 304 KB Output is correct
21 Correct 3 ms 308 KB Output is correct
22 Correct 3 ms 308 KB Output is correct
23 Correct 7 ms 312 KB Output is correct
24 Correct 7 ms 208 KB Output is correct
25 Correct 11 ms 316 KB Output is correct
26 Correct 10 ms 316 KB Output is correct
27 Correct 8 ms 208 KB Output is correct
28 Correct 9 ms 308 KB Output is correct
29 Correct 14 ms 208 KB Output is correct
30 Correct 25 ms 316 KB Output is correct
31 Correct 17 ms 328 KB Output is correct
32 Correct 13 ms 308 KB Output is correct
33 Correct 9 ms 308 KB Output is correct
34 Correct 11 ms 256 KB Output is correct
35 Correct 20 ms 320 KB Output is correct
36 Correct 21 ms 320 KB Output is correct
37 Correct 32 ms 312 KB Output is correct
38 Correct 21 ms 316 KB Output is correct
39 Correct 21 ms 308 KB Output is correct
40 Correct 7 ms 316 KB Output is correct
41 Correct 9 ms 308 KB Output is correct
# 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 1 ms 208 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 18 ms 292 KB Output is correct
8 Correct 14 ms 208 KB Output is correct
9 Correct 52 ms 316 KB Output is correct
10 Correct 24 ms 208 KB Output is correct
11 Correct 8 ms 316 KB Output is correct
12 Correct 16 ms 320 KB Output is correct
13 Correct 52 ms 312 KB Output is correct
14 Correct 34 ms 316 KB Output is correct
15 Correct 29 ms 208 KB Output is correct
16 Correct 38 ms 312 KB Output is correct
17 Correct 24 ms 312 KB Output is correct
18 Correct 24 ms 316 KB Output is correct
19 Correct 40 ms 316 KB Output is correct
20 Correct 31 ms 312 KB Output is correct
21 Correct 50 ms 208 KB Output is correct
22 Correct 26 ms 316 KB Output is correct
23 Correct 40 ms 316 KB Output is correct
24 Correct 24 ms 312 KB Output is correct
25 Correct 20 ms 208 KB Output is correct
26 Correct 7 ms 320 KB Output is correct
27 Correct 30 ms 208 KB Output is correct
28 Correct 24 ms 316 KB Output is correct
29 Correct 24 ms 208 KB Output is correct
30 Correct 45 ms 300 KB Output is correct
31 Correct 38 ms 208 KB Output is correct
32 Correct 30 ms 312 KB Output is correct
33 Correct 32 ms 316 KB Output is correct
34 Correct 39 ms 316 KB Output is correct
35 Correct 31 ms 316 KB Output is correct
36 Correct 38 ms 296 KB Output is correct
37 Correct 41 ms 312 KB Output is correct
38 Correct 53 ms 300 KB Output is correct
39 Correct 20 ms 316 KB Output is correct
40 Correct 45 ms 336 KB Output is correct
41 Correct 35 ms 312 KB Output is correct
42 Correct 44 ms 316 KB Output is correct
43 Correct 11 ms 208 KB Output is correct
44 Correct 34 ms 312 KB Output is correct
45 Correct 12 ms 208 KB Output is correct
46 Correct 21 ms 324 KB Output is correct
47 Correct 20 ms 312 KB Output is correct
48 Correct 20 ms 316 KB Output is correct