oj.uz

Submission #857982

# Submission time Handle Problem Language Result Execution time Memory
857982 2023-10-07T08:29:11 Z firewater Rarest Insects (IOI22_insects) C++17
100 / 100
 32 ms 948 KB 
#include "insects.h"
#include<bits/stdc++.h>
#define MX 2023
using namespace std;
int n,m,l,r,num,sav,v[MX],p[MX],pp[MX];
vector<int>d;
int check(int x)
{
	for(int i=0;i<n;++i){
		if(p[v[i]]||pp[v[i]])continue;
		move_inside(v[i]);
		if(press_button()>x)move_outside(v[i]);
		else{
			p[v[i]]=1;
			d.push_back(v[i]);
			num++;
		}
		if(num==x*m)return num;
	}
	return num;
}
int min_cardinality(int N) {
	n=N;
	for(int i=0;i<n;++i)
		v[i]=i;
	random_shuffle(v,v+n);
	for(int i=0;i<n;++i){
		move_inside(v[i]);
		if(press_button()>1)move_outside(v[i]);
		else p[v[i]]=1,num++;
	}
	m=num;
	l=1;
	r=n/m;
	sav=-1;
	while(l<r){
		int mid=l+r+(r==l+1)>>1;
		mid=min(mid,r);
		d.clear();
		if(sav!=-1){
			d.push_back(sav);
			sav=-1;
		}
		if(check(mid)==mid*m)l=mid;
		else{
			r=mid-1;
			for(int i=0;i<n;++i)
				if(!p[v[i]])pp[v[i]]=1;
			for(int i=1;i<d.size();++i){
				p[d[i]]=0;
				move_outside(d[i]);
				num--;
			}
			sav=d[0];
		}
	}
	return l;
}

Compilation message

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:37:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   37 |   int mid=l+r+(r==l+1)>>1;
      |           ~~~^~~~~~~~~
insects.cpp:49:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |    for(int i=1;i<d.size();++i){
      |                ~^~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 2 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 2 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 2 ms 344 KB Output is correct
13 Correct 2 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 3 ms 344 KB Output is correct
17 Correct 3 ms 344 KB Output is correct
18 Correct 2 ms 344 KB Output is correct
19 Correct 2 ms 344 KB Output is correct
20 Correct 2 ms 344 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 2 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 2 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 2 ms 344 KB Output is correct
13 Correct 2 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 3 ms 344 KB Output is correct
17 Correct 3 ms 344 KB Output is correct
18 Correct 2 ms 344 KB Output is correct
19 Correct 2 ms 344 KB Output is correct
20 Correct 2 ms 344 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 12 ms 452 KB Output is correct
24 Correct 4 ms 344 KB Output is correct
25 Correct 11 ms 456 KB Output is correct
26 Correct 16 ms 600 KB Output is correct
27 Correct 12 ms 712 KB Output is correct
28 Correct 4 ms 344 KB Output is correct
29 Correct 14 ms 588 KB Output is correct
30 Correct 12 ms 344 KB Output is correct
31 Correct 10 ms 592 KB Output is correct
32 Correct 11 ms 708 KB Output is correct
33 Correct 13 ms 848 KB Output is correct
34 Correct 11 ms 856 KB Output is correct
35 Correct 9 ms 452 KB Output is correct
36 Correct 12 ms 600 KB Output is correct
37 Correct 11 ms 596 KB Output is correct
38 Correct 12 ms 688 KB Output is correct
39 Correct 8 ms 704 KB Output is correct
40 Correct 9 ms 456 KB Output is correct
41 Correct 4 ms 344 KB Output is correct

Subtask #3
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 23 ms 704 KB Output is correct
8 Correct 11 ms 344 KB Output is correct
9 Correct 29 ms 708 KB Output is correct
10 Correct 25 ms 688 KB Output is correct
11 Correct 31 ms 432 KB Output is correct
12 Correct 13 ms 500 KB Output is correct
13 Correct 26 ms 684 KB Output is correct
14 Correct 30 ms 848 KB Output is correct
15 Correct 20 ms 684 KB Output is correct
16 Correct 19 ms 848 KB Output is correct
17 Correct 19 ms 600 KB Output is correct
18 Correct 22 ms 948 KB Output is correct
19 Correct 24 ms 448 KB Output is correct
20 Correct 26 ms 600 KB Output is correct
21 Correct 24 ms 600 KB Output is correct
22 Correct 26 ms 452 KB Output is correct
23 Correct 19 ms 692 KB Output is correct
24 Correct 16 ms 652 KB Output is correct
25 Correct 13 ms 852 KB Output is correct
26 Correct 10 ms 344 KB Output is correct
27 Correct 22 ms 436 KB Output is correct
28 Correct 20 ms 344 KB Output is correct
29 Correct 20 ms 440 KB Output is correct
30 Correct 25 ms 684 KB Output is correct
31 Correct 28 ms 600 KB Output is correct
32 Correct 24 ms 460 KB Output is correct
33 Correct 28 ms 848 KB Output is correct
34 Correct 21 ms 456 KB Output is correct
35 Correct 19 ms 448 KB Output is correct
36 Correct 23 ms 848 KB Output is correct
37 Correct 32 ms 344 KB Output is correct
38 Correct 27 ms 692 KB Output is correct
39 Correct 32 ms 456 KB Output is correct
40 Correct 28 ms 600 KB Output is correct
41 Correct 25 ms 464 KB Output is correct
42 Correct 22 ms 692 KB Output is correct
43 Correct 6 ms 344 KB Output is correct
44 Correct 20 ms 696 KB Output is correct
45 Correct 23 ms 428 KB Output is correct
46 Correct 15 ms 600 KB Output is correct
47 Correct 15 ms 432 KB Output is correct
48 Correct 13 ms 592 KB Output is correct