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Submission #405131

# Submission time Handle Problem Language Result Execution time Memory
405131 2021-05-15T18:12:09 Z CaroLinda A Difficult(y) Choice (BOI21_books) C++14
45 / 100
 4 ms 320 KB 
#include <bits/stdc++.h>
#include "books.h"

#define sz(x) (int)(x.size())

using namespace std;
//
// --- Sample implementation for the task books ---
//
// To compile this program with the sample grader, place:
//     books.h books_sample.cpp sample_grader.cpp
// in a single folder and run:
//     g++ books_sample.cpp sample_grader.cpp
// in this folder.
//

map<int, long long> mp ;
long long A ;

long long ask(int x) 
{
	if(mp.find(x) != mp.end()) return mp[x] ;
	return mp[x] = skim(x) ;
}

bool check(long long s) { return  s >= A && s <= A+A ;}

void solve(int N, int K, long long a, int S) 
{
	A = a ;

	int l = 1, r = N , mid , best = -1 ;

	while( l <= r )
	{
		mid = (l+r)>>1 ;

		if( ask(mid) <= A ) { best = mid ; l = mid+1 ; }
		else r = mid-1 ;

	}

	if( best == -1 ) impossible() ;

	vector<long long> v ;
	vector<int> R ;

	if( best <= 2*K ) 
	{ 
		for(int i = 1 ; i <= best; i++ ) 
		{
			v.push_back(ask(i)) ;
			R.push_back(i) ;
		} 
	}
	else 
	{
		for(int i = 1 ; i <= K ; i++ ) v.push_back(ask(i)) , R.push_back(i) ;
		for(int i = best-K+1 ; i <= best ; i++ ) v.push_back(ask(i)) , R.push_back(i) ;
	}

	if(best+1 <= N && best >= K-1)
	{
		long long s = ask(best+1) ;
		for(int i = 0 ; i < K-1 ; i++ ) s += v[i] ;

		if( check(s) )
		{
			vector<int> ans = {best+1} ;
			for(int i = 1 ; i < K ; i++ ) ans.push_back(i) ;
			answer(ans) ;
			return ;
		}

	}

	if( best < K ) impossible() ;

	long long s = 0 ;
	for(int i = 0 ; i < K ; i++ ) s += v[i] ;

	if( check(s) ) 
	{
		vector<int> ans ;
		for(int i = 0 ; i < K ; i++ ) ans.push_back(R[i]) ;
		answer(ans) ;
		return ;
	}

	for(int i = K ; i < sz(v) ; i++ )
	{
		s -= v[i-K] ;
		s += v[i] ;

		if(check(s)) 
		{
			vector<int> ans ;
			for(int j = i-K+1 ; j <= i ; j++ ) ans.push_back(R[j]) ;
			answer(ans) ;
			return ;
		}
	}

}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 1 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 1 ms 200 KB Output is correct
6 Correct 1 ms 200 KB Output is correct
7 Correct 1 ms 200 KB Output is correct
8 Incorrect 1 ms 200 KB Incorrect

Subtask #2
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 1 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 1 ms 200 KB Output is correct
6 Correct 1 ms 200 KB Output is correct
7 Correct 1 ms 200 KB Output is correct
8 Incorrect 1 ms 200 KB Incorrect
9 Halted 0 ms 0 KB -

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 2 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 1 ms 200 KB Output is correct
6 Correct 1 ms 200 KB Output is correct
7 Correct 1 ms 200 KB Output is correct
8 Correct 2 ms 200 KB Output is correct
9 Correct 1 ms 200 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 2 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 1 ms 200 KB Output is correct
6 Correct 1 ms 200 KB Output is correct
7 Correct 1 ms 200 KB Output is correct
8 Correct 2 ms 200 KB Output is correct
9 Correct 1 ms 200 KB Output is correct
10 Correct 1 ms 200 KB Output is correct
11 Correct 2 ms 200 KB Output is correct
12 Correct 1 ms 200 KB Output is correct
13 Correct 1 ms 200 KB Output is correct
14 Correct 1 ms 200 KB Output is correct
15 Correct 1 ms 200 KB Output is correct
16 Correct 2 ms 200 KB Output is correct
17 Correct 1 ms 200 KB Output is correct
18 Correct 1 ms 200 KB Output is correct
19 Correct 2 ms 200 KB Output is correct
20 Correct 1 ms 272 KB Output is correct
21 Correct 1 ms 200 KB Output is correct
22 Correct 1 ms 200 KB Output is correct
23 Correct 2 ms 288 KB Output is correct
24 Correct 1 ms 292 KB Output is correct
25 Correct 1 ms 296 KB Output is correct

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 2 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 1 ms 200 KB Output is correct
6 Correct 1 ms 200 KB Output is correct
7 Correct 1 ms 200 KB Output is correct
8 Correct 2 ms 200 KB Output is correct
9 Correct 1 ms 200 KB Output is correct
10 Correct 1 ms 200 KB Output is correct
11 Correct 2 ms 200 KB Output is correct
12 Correct 1 ms 200 KB Output is correct
13 Correct 1 ms 200 KB Output is correct
14 Correct 1 ms 200 KB Output is correct
15 Correct 1 ms 200 KB Output is correct
16 Correct 2 ms 200 KB Output is correct
17 Correct 1 ms 200 KB Output is correct
18 Correct 1 ms 200 KB Output is correct
19 Correct 2 ms 200 KB Output is correct
20 Correct 1 ms 272 KB Output is correct
21 Correct 1 ms 200 KB Output is correct
22 Correct 1 ms 200 KB Output is correct
23 Correct 2 ms 288 KB Output is correct
24 Correct 1 ms 292 KB Output is correct
25 Correct 1 ms 296 KB Output is correct
26 Correct 1 ms 200 KB Output is correct
27 Correct 1 ms 200 KB Output is correct
28 Correct 1 ms 200 KB Output is correct
29 Correct 1 ms 200 KB Output is correct
30 Correct 1 ms 200 KB Output is correct
31 Correct 1 ms 200 KB Output is correct
32 Correct 1 ms 200 KB Output is correct
33 Correct 2 ms 200 KB Output is correct
34 Correct 1 ms 200 KB Output is correct
35 Correct 3 ms 200 KB Output is correct
36 Correct 2 ms 200 KB Output is correct
37 Correct 1 ms 200 KB Output is correct
38 Correct 1 ms 200 KB Output is correct
39 Correct 1 ms 272 KB Output is correct
40 Correct 1 ms 292 KB Output is correct
41 Correct 1 ms 200 KB Output is correct
42 Correct 1 ms 200 KB Output is correct
43 Correct 2 ms 200 KB Output is correct
44 Correct 1 ms 200 KB Output is correct
45 Correct 1 ms 200 KB Output is correct
46 Correct 1 ms 200 KB Output is correct
47 Correct 1 ms 200 KB Output is correct
48 Correct 1 ms 200 KB Output is correct
49 Correct 1 ms 284 KB Output is correct
50 Incorrect 2 ms 296 KB Incorrect

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 2 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 1 ms 200 KB Output is correct
6 Correct 1 ms 200 KB Output is correct
7 Correct 1 ms 200 KB Output is correct
8 Correct 2 ms 200 KB Output is correct
9 Correct 1 ms 200 KB Output is correct
10 Correct 1 ms 200 KB Output is correct
11 Correct 2 ms 200 KB Output is correct
12 Correct 1 ms 200 KB Output is correct
13 Correct 1 ms 200 KB Output is correct
14 Correct 1 ms 200 KB Output is correct
15 Correct 1 ms 200 KB Output is correct
16 Correct 2 ms 200 KB Output is correct
17 Correct 1 ms 200 KB Output is correct
18 Correct 1 ms 200 KB Output is correct
19 Correct 2 ms 200 KB Output is correct
20 Correct 1 ms 272 KB Output is correct
21 Correct 1 ms 200 KB Output is correct
22 Correct 1 ms 200 KB Output is correct
23 Correct 2 ms 288 KB Output is correct
24 Correct 1 ms 292 KB Output is correct
25 Correct 1 ms 296 KB Output is correct
26 Correct 1 ms 200 KB Output is correct
27 Correct 2 ms 268 KB Output is correct
28 Correct 2 ms 200 KB Output is correct
29 Correct 1 ms 200 KB Output is correct
30 Correct 1 ms 200 KB Output is correct
31 Correct 1 ms 200 KB Output is correct
32 Correct 1 ms 200 KB Output is correct
33 Correct 2 ms 292 KB Output is correct
34 Correct 1 ms 200 KB Output is correct
35 Correct 1 ms 200 KB Output is correct
36 Correct 1 ms 292 KB Output is correct
37 Correct 1 ms 200 KB Output is correct
38 Correct 1 ms 200 KB Output is correct
39 Correct 1 ms 288 KB Output is correct
40 Correct 1 ms 320 KB Output is correct
41 Correct 1 ms 200 KB Output is correct
42 Correct 1 ms 268 KB Output is correct
43 Correct 1 ms 200 KB Output is correct
44 Correct 2 ms 200 KB Output is correct
45 Correct 1 ms 200 KB Output is correct
46 Correct 2 ms 276 KB Output is correct
47 Correct 1 ms 200 KB Output is correct
48 Correct 1 ms 200 KB Output is correct
49 Correct 4 ms 200 KB Output is correct
50 Correct 2 ms 200 KB Output is correct

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 2 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 1 ms 200 KB Output is correct
6 Correct 1 ms 200 KB Output is correct
7 Correct 1 ms 200 KB Output is correct
8 Correct 2 ms 200 KB Output is correct
9 Correct 1 ms 200 KB Output is correct
10 Correct 1 ms 200 KB Output is correct
11 Correct 2 ms 200 KB Output is correct
12 Correct 1 ms 200 KB Output is correct
13 Correct 1 ms 200 KB Output is correct
14 Correct 1 ms 200 KB Output is correct
15 Correct 1 ms 200 KB Output is correct
16 Correct 2 ms 200 KB Output is correct
17 Correct 1 ms 200 KB Output is correct
18 Correct 1 ms 200 KB Output is correct
19 Correct 2 ms 200 KB Output is correct
20 Correct 1 ms 272 KB Output is correct
21 Correct 1 ms 200 KB Output is correct
22 Correct 1 ms 200 KB Output is correct
23 Correct 2 ms 288 KB Output is correct
24 Correct 1 ms 292 KB Output is correct
25 Correct 1 ms 296 KB Output is correct
26 Correct 1 ms 200 KB Output is correct
27 Correct 1 ms 200 KB Output is correct
28 Correct 1 ms 200 KB Output is correct
29 Correct 1 ms 200 KB Output is correct
30 Correct 1 ms 200 KB Output is correct
31 Correct 1 ms 200 KB Output is correct
32 Correct 1 ms 200 KB Output is correct
33 Correct 2 ms 200 KB Output is correct
34 Correct 1 ms 200 KB Output is correct
35 Correct 3 ms 200 KB Output is correct
36 Correct 2 ms 200 KB Output is correct
37 Correct 1 ms 200 KB Output is correct
38 Correct 1 ms 200 KB Output is correct
39 Correct 1 ms 272 KB Output is correct
40 Correct 1 ms 292 KB Output is correct
41 Correct 1 ms 200 KB Output is correct
42 Correct 1 ms 200 KB Output is correct
43 Correct 2 ms 200 KB Output is correct
44 Correct 1 ms 200 KB Output is correct
45 Correct 1 ms 200 KB Output is correct
46 Correct 1 ms 200 KB Output is correct
47 Correct 1 ms 200 KB Output is correct
48 Correct 1 ms 200 KB Output is correct
49 Correct 1 ms 284 KB Output is correct
50 Incorrect 2 ms 296 KB Incorrect