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답안 #757776

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
757776 2023-06-13T18:20:39 Z borisAngelov 커다란 상품 (IOI17_prize) C++17
97.63 / 100
 68 ms 336 KB 
#include "prize.h"

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

using namespace std;

const int maxn = 200005;

int N;

int max_result = 0;

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 (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)
        {
            curr = ask(mid);

            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 = 1; i <= 500; ++i)
    {
        int idx = rand() % N;

        vector<int> curr_res = ask(idx);

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

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

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

Subtask #1
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 288 KB Output is correct
2 Correct 8 ms 288 KB Output is correct
3 Correct 6 ms 208 KB Output is correct
4 Correct 6 ms 292 KB Output is correct
5 Correct 4 ms 208 KB Output is correct
6 Correct 4 ms 292 KB Output is correct
7 Correct 3 ms 288 KB Output is correct
8 Correct 5 ms 208 KB Output is correct
9 Correct 5 ms 288 KB Output is correct
10 Correct 4 ms 208 KB Output is correct

Subtask #2
77.63 / 80.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 208 KB Output is correct
2 Correct 3 ms 292 KB Output is correct
3 Correct 6 ms 208 KB Output is correct
4 Correct 6 ms 208 KB Output is correct
5 Correct 3 ms 292 KB Output is correct
6 Correct 6 ms 268 KB Output is correct
7 Correct 5 ms 208 KB Output is correct
8 Correct 3 ms 292 KB Output is correct
9 Correct 8 ms 208 KB Output is correct
10 Correct 6 ms 208 KB Output is correct
11 Correct 8 ms 208 KB Output is correct
12 Correct 3 ms 288 KB Output is correct
13 Correct 12 ms 292 KB Output is correct
14 Correct 8 ms 208 KB Output is correct
15 Correct 10 ms 288 KB Output is correct
16 Correct 3 ms 292 KB Output is correct
17 Correct 5 ms 208 KB Output is correct
18 Partially correct 44 ms 208 KB Partially correct - number of queries: 5108
19 Correct 3 ms 292 KB Output is correct
20 Correct 16 ms 300 KB Output is correct
21 Correct 18 ms 208 KB Output is correct
22 Correct 14 ms 208 KB Output is correct
23 Correct 3 ms 336 KB Output is correct
24 Correct 5 ms 292 KB Output is correct
25 Correct 27 ms 208 KB Output is correct
26 Correct 20 ms 296 KB Output is correct
27 Correct 7 ms 208 KB Output is correct
28 Correct 37 ms 208 KB Output is correct
29 Correct 29 ms 296 KB Output is correct
30 Partially correct 28 ms 292 KB Partially correct - number of queries: 5088
31 Correct 4 ms 292 KB Output is correct
32 Correct 7 ms 208 KB Output is correct
33 Correct 1 ms 208 KB Output is correct
34 Correct 22 ms 292 KB Output is correct
35 Correct 4 ms 208 KB Output is correct
36 Correct 12 ms 288 KB Output is correct
37 Correct 5 ms 208 KB Output is correct
38 Correct 5 ms 292 KB Output is correct
39 Correct 15 ms 296 KB Output is correct
40 Correct 37 ms 208 KB Output is correct
41 Correct 33 ms 208 KB Output is correct
42 Correct 25 ms 208 KB Output is correct
43 Correct 22 ms 208 KB Output is correct
44 Correct 25 ms 208 KB Output is correct
45 Correct 18 ms 208 KB Output is correct
46 Correct 6 ms 296 KB Output is correct
47 Correct 27 ms 208 KB Output is correct
48 Correct 39 ms 292 KB Output is correct
49 Correct 7 ms 288 KB Output is correct
50 Partially correct 68 ms 292 KB Partially correct - number of queries: 5127
51 Correct 15 ms 208 KB Output is correct
52 Correct 4 ms 208 KB Output is correct
53 Correct 8 ms 208 KB Output is correct
54 Correct 21 ms 292 KB Output is correct
55 Correct 6 ms 268 KB Output is correct
56 Partially correct 48 ms 208 KB Partially correct - number of queries: 5134
57 Correct 27 ms 208 KB Output is correct
58 Correct 46 ms 208 KB Output is correct
59 Correct 35 ms 296 KB Output is correct
60 Correct 28 ms 208 KB Output is correct
61 Correct 3 ms 288 KB Output is correct
62 Correct 5 ms 208 KB Output is correct
63 Correct 5 ms 208 KB Output is correct
64 Correct 3 ms 280 KB Output is correct
65 Correct 3 ms 272 KB Output is correct
66 Correct 9 ms 208 KB Output is correct
67 Correct 11 ms 208 KB Output is correct
68 Correct 6 ms 208 KB Output is correct
69 Correct 6 ms 288 KB Output is correct
70 Correct 6 ms 288 KB Output is correct
71 Partially correct 41 ms 208 KB Partially correct - number of queries: 5237
72 Correct 10 ms 208 KB Output is correct
73 Partially correct 39 ms 208 KB Partially correct - number of queries: 5176
74 Partially correct 49 ms 208 KB Partially correct - number of queries: 5203
75 Correct 7 ms 208 KB Output is correct
76 Correct 39 ms 208 KB Output is correct
77 Partially correct 53 ms 208 KB Partially correct - number of queries: 5196
78 Correct 11 ms 208 KB Output is correct
79 Correct 29 ms 208 KB Output is correct
80 Partially correct 42 ms 208 KB Partially correct - number of queries: 5164
81 Partially correct 47 ms 208 KB Partially correct - number of queries: 5158
82 Partially correct 40 ms 208 KB Partially correct - number of queries: 5183
83 Correct 7 ms 208 KB Output is correct
84 Correct 40 ms 288 KB Output is correct
85 Partially correct 52 ms 208 KB Partially correct - number of queries: 5221
86 Correct 32 ms 208 KB Output is correct
87 Correct 7 ms 208 KB Output is correct
88 Correct 24 ms 208 KB Output is correct
89 Correct 11 ms 208 KB Output is correct
90 Correct 8 ms 208 KB Output is correct
91 Correct 16 ms 208 KB Output is correct
92 Correct 27 ms 208 KB Output is correct
93 Correct 37 ms 208 KB Output is correct
94 Correct 38 ms 208 KB Output is correct
95 Correct 51 ms 208 KB Output is correct
96 Correct 48 ms 208 KB Output is correct
97 Correct 25 ms 216 KB Output is correct