답안 #838105

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
838105	2023-08-26T08:47:21 Z	Johann	커다란 상품 (IOI17_prize)	C++14	100 / 100	49 ms	11376 KB

prize

#include "prize.h"
#include "bits/stdc++.h"
using namespace std;

typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> pii;
typedef vector<pii> vpii;
#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()

vvi Qu;
vi query(int i)
{
	if (Qu[i][0] == -1)
		Qu[i] = ask(i);
	return Qu[i];
}
set<int> sums;
int reference;
vi interesting;

int cnt;
int r;
void resolve(int l)
{
	if (r - l == 0)
		return;
	vi tmp = query(l);
	if (tmp[0] + tmp[1] != reference)
	{
		resolve(l + 1);
		interesting.push_back(l);
		++cnt;
	}
	else
	{
		while (tmp[1] > cnt)
			resolve((l + r) / 2);
	}
	r = l;
}

int find_best(int n)
{
	Qu.assign(n, {-1, -1});

	if (n <= 5000)
	{ // query everything
		for (int i = 0; i < n; i++)
		{
			std::vector<int> res = ask(i);
			if (res[0] + res[1] == 0)
				return i;
		}
	}

	int j = 0;
	while (n / (1 << (j + 1)) >= 500)
		++j;

	sums.clear();
	int i;
	for (i = 0; i < n; i += (1 << j))
	{
		vi tmp = query(i);
		sums.insert(tmp[0] + tmp[1]);
	}
	reference = *sums.rbegin();

	cnt = 0;
	if (i >= n)
		i -= (1 << j);
	r = n;
	while (i >= 0)
	{
		resolve(i);
		i -= (1 << j);
	}

	for (int x : interesting)
	{
		vi tmp = query(x);
		if (tmp[0] + tmp[1] == 0)
			return x;
	}

	return 0;
}

Subtask #1

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	11216 KB	Output is correct
2	Correct	11 ms	11264 KB	Output is correct
3	Correct	14 ms	11260 KB	Output is correct
4	Correct	16 ms	11344 KB	Output is correct
5	Correct	11 ms	11260 KB	Output is correct
6	Correct	16 ms	11216 KB	Output is correct
7	Correct	13 ms	11208 KB	Output is correct
8	Correct	18 ms	11216 KB	Output is correct
9	Correct	15 ms	11216 KB	Output is correct
10	Correct	17 ms	11216 KB	Output is correct

Subtask #2

80.0 / 80.0

#	결과	실행 시간	메모리	Grader output
1	Correct	14 ms	11340 KB	Output is correct
2	Correct	15 ms	11260 KB	Output is correct
3	Correct	16 ms	11192 KB	Output is correct
4	Correct	15 ms	11216 KB	Output is correct
5	Correct	15 ms	11216 KB	Output is correct
6	Correct	15 ms	11168 KB	Output is correct
7	Correct	15 ms	11216 KB	Output is correct
8	Correct	13 ms	11216 KB	Output is correct
9	Correct	18 ms	11216 KB	Output is correct
10	Correct	15 ms	11216 KB	Output is correct
11	Correct	14 ms	11216 KB	Output is correct
12	Correct	15 ms	11216 KB	Output is correct
13	Correct	16 ms	11216 KB	Output is correct
14	Correct	10 ms	1360 KB	Output is correct
15	Correct	49 ms	11252 KB	Output is correct
16	Correct	42 ms	11248 KB	Output is correct
17	Correct	38 ms	11236 KB	Output is correct
18	Correct	36 ms	11248 KB	Output is correct
19	Correct	36 ms	11216 KB	Output is correct
20	Correct	20 ms	5712 KB	Output is correct
21	Correct	40 ms	11216 KB	Output is correct
22	Correct	37 ms	11340 KB	Output is correct
23	Correct	14 ms	11216 KB	Output is correct
24	Correct	18 ms	11216 KB	Output is correct
25	Correct	37 ms	11264 KB	Output is correct
26	Correct	43 ms	11340 KB	Output is correct
27	Correct	14 ms	11216 KB	Output is correct
28	Correct	33 ms	11216 KB	Output is correct
29	Correct	31 ms	11328 KB	Output is correct
30	Correct	28 ms	11296 KB	Output is correct
31	Correct	45 ms	11256 KB	Output is correct
32	Correct	17 ms	11212 KB	Output is correct
33	Correct	0 ms	208 KB	Output is correct
34	Correct	33 ms	11260 KB	Output is correct
35	Correct	12 ms	11324 KB	Output is correct
36	Correct	35 ms	11332 KB	Output is correct
37	Correct	19 ms	11236 KB	Output is correct
38	Correct	18 ms	11208 KB	Output is correct
39	Correct	44 ms	11260 KB	Output is correct
40	Correct	36 ms	11288 KB	Output is correct
41	Correct	32 ms	11216 KB	Output is correct
42	Correct	47 ms	11248 KB	Output is correct
43	Correct	41 ms	11236 KB	Output is correct
44	Correct	48 ms	11252 KB	Output is correct
45	Correct	39 ms	11256 KB	Output is correct
46	Correct	31 ms	11256 KB	Output is correct
47	Correct	38 ms	11216 KB	Output is correct
48	Correct	27 ms	11268 KB	Output is correct
49	Correct	45 ms	11252 KB	Output is correct
50	Correct	34 ms	11252 KB	Output is correct
51	Correct	35 ms	11216 KB	Output is correct
52	Correct	29 ms	11256 KB	Output is correct
53	Correct	16 ms	11160 KB	Output is correct
54	Correct	24 ms	11272 KB	Output is correct
55	Correct	40 ms	11268 KB	Output is correct
56	Correct	35 ms	11216 KB	Output is correct
57	Correct	45 ms	11168 KB	Output is correct
58	Correct	41 ms	11260 KB	Output is correct
59	Correct	33 ms	11216 KB	Output is correct
60	Correct	45 ms	11256 KB	Output is correct
61	Correct	15 ms	11160 KB	Output is correct
62	Correct	15 ms	11160 KB	Output is correct
63	Correct	15 ms	11216 KB	Output is correct
64	Correct	14 ms	11216 KB	Output is correct
65	Correct	15 ms	11216 KB	Output is correct
66	Correct	16 ms	11216 KB	Output is correct
67	Correct	19 ms	11216 KB	Output is correct
68	Correct	17 ms	11288 KB	Output is correct
69	Correct	14 ms	11288 KB	Output is correct
70	Correct	15 ms	11208 KB	Output is correct
71	Correct	49 ms	11320 KB	Output is correct
72	Correct	13 ms	11216 KB	Output is correct
73	Correct	44 ms	11216 KB	Output is correct
74	Correct	49 ms	11248 KB	Output is correct
75	Correct	15 ms	11216 KB	Output is correct
76	Correct	44 ms	11216 KB	Output is correct
77	Correct	47 ms	11256 KB	Output is correct
78	Correct	14 ms	11216 KB	Output is correct
79	Correct	29 ms	11216 KB	Output is correct
80	Correct	37 ms	11376 KB	Output is correct
81	Correct	36 ms	11216 KB	Output is correct
82	Correct	32 ms	11216 KB	Output is correct
83	Correct	15 ms	11276 KB	Output is correct
84	Correct	23 ms	11256 KB	Output is correct
85	Correct	49 ms	11216 KB	Output is correct
86	Correct	21 ms	11336 KB	Output is correct
87	Correct	17 ms	11216 KB	Output is correct
88	Correct	16 ms	11272 KB	Output is correct
89	Correct	15 ms	11232 KB	Output is correct
90	Correct	15 ms	11216 KB	Output is correct
91	Correct	15 ms	11164 KB	Output is correct
92	Correct	15 ms	11216 KB	Output is correct
93	Correct	18 ms	11276 KB	Output is correct
94	Correct	23 ms	11216 KB	Output is correct
95	Correct	15 ms	11180 KB	Output is correct
96	Correct	22 ms	11264 KB	Output is correct
97	Correct	19 ms	11252 KB	Output is correct