답안 #757801

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
757801	2023-06-13T18:37:05 Z	borisAngelov	커다란 상품 (IOI17_prize)	C++17	97.75 / 100	70 ms	5256 KB

prize

#include "prize.h"

#include <iostream>
#include <vector>
#include <random>
#include <ctime>

using namespace std;

const int maxn = 200005;

int N;

int max_result = 0;

vector<int> results[maxn];

int divide(int l, int r, int removed_from_left, int removed_from_right)
{
    if (l > r)
    {
        return 0;
    }

    int mid = (l + r) / 2;
    vector<int> curr;

    while (mid <= r)
    {
        //curr = ask(mid);

        if (!results[mid].empty())
        {
            curr = results[mid];
        }
        else
        {
            curr = ask(mid);
            results[mid].push_back(curr[0]);
            results[mid].push_back(curr[1]);
        }

        if (curr[0] + curr[1] == 0)
        {
            return mid;
        }

        if (curr[0] + curr[1] == max_result)
        {
            break;
        }

        ++mid;
    }

    if (mid <= r)
    {
        curr[0] -= (removed_from_left - (mid - (l + r) / 2));
        curr[1] -= removed_from_right;

        if (curr[0] > 0)
        {
            int idx = divide(l, (l + r) / 2 - 1, removed_from_left, removed_from_right + curr[1] + (mid - (l + r) / 2));

            if (idx != 0)
            {
                return idx;
            }
        }

        if (curr[1] > 0)
        {
            int idx = divide(mid + 1, r, removed_from_left + curr[0] + (mid - (l + r) / 2), removed_from_right);

            if (idx != 0)
            {
                return idx;
            }
        }

        return 0;
    }
    else
    {
        mid = (l + r) / 2 - 1;

        while (mid >= l)
        {
            if (!results[mid].empty())
            {
                curr = results[mid];
            }
            else
            {
                curr = ask(mid);
                results[mid].push_back(curr[0]);
                results[mid].push_back(curr[1]);
            }

            if (curr[0] + curr[1] == 0)
            {
                return mid;
            }

            if (curr[0] + curr[1] == max_result)
            {
                return mid;
            }

            --mid;
        }

        if (mid == l - 1)
        {
            return 0;
        }

        curr[0] -= removed_from_left;

        if (curr[0] > 0)
        {
            return divide(l, mid - 1, removed_from_left, removed_from_right + (r - mid));
        }

        return 0;
    }

    return 0;
}

int find_best(int n)
{
    N = n;

    for (int i = 0; i < 470; ++i)
    {
        int idx = rand() % n;

        while (!results[idx].empty())
        {
            idx = rand() % n;
        }

        vector<int> curr_result = ask(idx);

        results[idx].push_back(curr_result[0]);
        results[idx].push_back(curr_result[1]);

        if (curr_result[0] + curr_result[1] == 0)
        {
            return idx;
        }

        max_result = max(max_result, curr_result[0] + curr_result[1]);

        if (max_result == n - 1)
        {
            break;
        }
    }

    return divide(0, N - 1, 0, 0);
}

Subtask #1

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	5008 KB	Output is correct
2	Correct	8 ms	4996 KB	Output is correct
3	Correct	7 ms	5100 KB	Output is correct
4	Correct	5 ms	5008 KB	Output is correct
5	Correct	5 ms	5000 KB	Output is correct
6	Correct	7 ms	4944 KB	Output is correct
7	Correct	6 ms	4988 KB	Output is correct
8	Correct	8 ms	4988 KB	Output is correct
9	Correct	7 ms	4988 KB	Output is correct
10	Correct	6 ms	4944 KB	Output is correct

Subtask #2

77.75 / 80.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	5012 KB	Output is correct
2	Correct	7 ms	5004 KB	Output is correct
3	Correct	7 ms	4944 KB	Output is correct
4	Correct	8 ms	4944 KB	Output is correct
5	Correct	4 ms	4992 KB	Output is correct
6	Correct	7 ms	4944 KB	Output is correct
7	Correct	6 ms	4944 KB	Output is correct
8	Correct	8 ms	4988 KB	Output is correct
9	Correct	8 ms	4976 KB	Output is correct
10	Correct	8 ms	5016 KB	Output is correct
11	Correct	6 ms	5096 KB	Output is correct
12	Correct	8 ms	4944 KB	Output is correct
13	Correct	8 ms	5008 KB	Output is correct
14	Correct	10 ms	4996 KB	Output is correct
15	Correct	12 ms	4988 KB	Output is correct
16	Correct	5 ms	4984 KB	Output is correct
17	Correct	7 ms	4988 KB	Output is correct
18	Partially correct	23 ms	5148 KB	Partially correct - number of queries: 5073
19	Correct	7 ms	4944 KB	Output is correct
20	Correct	21 ms	5040 KB	Output is correct
21	Correct	25 ms	5012 KB	Output is correct
22	Correct	11 ms	5000 KB	Output is correct
23	Correct	5 ms	5080 KB	Output is correct
24	Correct	8 ms	4944 KB	Output is correct
25	Correct	25 ms	5024 KB	Output is correct
26	Correct	32 ms	5044 KB	Output is correct
27	Correct	7 ms	4992 KB	Output is correct
28	Correct	46 ms	5092 KB	Output is correct
29	Correct	40 ms	5024 KB	Output is correct
30	Partially correct	59 ms	5104 KB	Partially correct - number of queries: 5054
31	Correct	8 ms	4944 KB	Output is correct
32	Correct	9 ms	4988 KB	Output is correct
33	Correct	3 ms	4944 KB	Output is correct
34	Correct	19 ms	5008 KB	Output is correct
35	Correct	6 ms	4992 KB	Output is correct
36	Correct	17 ms	5020 KB	Output is correct
37	Correct	9 ms	4988 KB	Output is correct
38	Correct	7 ms	4944 KB	Output is correct
39	Correct	14 ms	5108 KB	Output is correct
40	Correct	43 ms	5112 KB	Output is correct
41	Correct	33 ms	5028 KB	Output is correct
42	Correct	22 ms	5072 KB	Output is correct
43	Correct	33 ms	5064 KB	Output is correct
44	Correct	26 ms	5160 KB	Output is correct
45	Correct	21 ms	5256 KB	Output is correct
46	Correct	6 ms	4984 KB	Output is correct
47	Correct	20 ms	4944 KB	Output is correct
48	Correct	36 ms	5088 KB	Output is correct
49	Correct	12 ms	4976 KB	Output is correct
50	Partially correct	45 ms	5064 KB	Partially correct - number of queries: 5088
51	Correct	26 ms	5116 KB	Output is correct
52	Correct	6 ms	4992 KB	Output is correct
53	Correct	7 ms	4944 KB	Output is correct
54	Correct	26 ms	5036 KB	Output is correct
55	Correct	6 ms	5004 KB	Output is correct
56	Partially correct	54 ms	5132 KB	Partially correct - number of queries: 5089
57	Correct	18 ms	5084 KB	Output is correct
58	Correct	33 ms	5152 KB	Output is correct
59	Correct	38 ms	5124 KB	Output is correct
60	Correct	29 ms	5004 KB	Output is correct
61	Correct	9 ms	4944 KB	Output is correct
62	Correct	8 ms	4944 KB	Output is correct
63	Correct	10 ms	4980 KB	Output is correct
64	Correct	6 ms	4996 KB	Output is correct
65	Correct	7 ms	4944 KB	Output is correct
66	Correct	9 ms	4980 KB	Output is correct
67	Correct	10 ms	5000 KB	Output is correct
68	Correct	15 ms	4944 KB	Output is correct
69	Correct	12 ms	5004 KB	Output is correct
70	Correct	10 ms	4984 KB	Output is correct
71	Partially correct	58 ms	5128 KB	Partially correct - number of queries: 5207
72	Correct	8 ms	5016 KB	Output is correct
73	Partially correct	70 ms	5068 KB	Partially correct - number of queries: 5146
74	Partially correct	56 ms	5140 KB	Partially correct - number of queries: 5173
75	Correct	10 ms	5008 KB	Output is correct
76	Correct	39 ms	5060 KB	Output is correct
77	Partially correct	49 ms	5104 KB	Partially correct - number of queries: 5161
78	Correct	15 ms	5004 KB	Output is correct
79	Correct	38 ms	5016 KB	Output is correct
80	Partially correct	51 ms	5136 KB	Partially correct - number of queries: 5158
81	Partially correct	57 ms	5080 KB	Partially correct - number of queries: 5146
82	Partially correct	59 ms	5080 KB	Partially correct - number of queries: 5141
83	Correct	8 ms	4944 KB	Output is correct
84	Correct	52 ms	5068 KB	Output is correct
85	Partially correct	25 ms	5116 KB	Partially correct - number of queries: 5225
86	Correct	24 ms	5136 KB	Output is correct
87	Correct	9 ms	4992 KB	Output is correct
88	Correct	31 ms	4996 KB	Output is correct
89	Correct	13 ms	5004 KB	Output is correct
90	Correct	9 ms	4996 KB	Output is correct
91	Correct	18 ms	5004 KB	Output is correct
92	Correct	24 ms	5028 KB	Output is correct
93	Correct	33 ms	5028 KB	Output is correct
94	Correct	42 ms	5056 KB	Output is correct
95	Correct	43 ms	5092 KB	Output is correct
96	Correct	25 ms	5112 KB	Output is correct
97	Correct	33 ms	5012 KB	Output is correct