oj.uz

Submission #957378

# Submission time Handle Problem Language Result Execution time Memory
957378 2024-04-03T15:13:45 Z kilkuwu The Big Prize (IOI17_prize) C++17
90 / 100
 49 ms 6544 KB 
#include "prize.h"
#include <bits/stdc++.h>

int find_best(int n) {
  std::vector<std::vector<int>> dp(n);

  auto query = [&](int i) -> std::vector<int> {
    if (dp[i].size()) return dp[i];
    return dp[i] = ask(i);
  };

  const int B = 500;
  if (n <= B) {
    for (int i = 0; i < n; i++) {
      auto res = query(i);
      if (res[0] + res[1] == 0) {
        return i;
      }
    }
    return 0;
  }

  int mx = 0;
  for (int i = 0; i < B; i++) {
    auto res = query(i);
    if (res[0] + res[1] == 0) return i;
    mx = std::max(mx, res[0] + res[1]);
  }

  int p = -1;
  for (int done = 0; done < mx; done++) {
    p++;

    int l = p;
    int r = n - 1;

    while (l < r) {
      int m = (l + r) / 2;

      auto res = query(m);

      if (res[0] + res[1] == 0) return m;

      if (res[0] + res[1] < mx || (res[0] > done)) {
        r = m;
      } else {
        l = m + 1;
      }
    }

    p = r;
    auto res = query(p);
    if (res[0] + res[1] == 0) return p;
  }

  return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5404 KB Output is correct
2 Correct 4 ms 5400 KB Output is correct
3 Correct 4 ms 5404 KB Output is correct
4 Correct 3 ms 5404 KB Output is correct
5 Correct 4 ms 5404 KB Output is correct
6 Correct 3 ms 4952 KB Output is correct
7 Correct 4 ms 5408 KB Output is correct
8 Correct 5 ms 5400 KB Output is correct
9 Correct 4 ms 5408 KB Output is correct
10 Correct 4 ms 5332 KB Output is correct

Subtask #2
70.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 5412 KB Output is correct
2 Correct 3 ms 5400 KB Output is correct
3 Correct 5 ms 5396 KB Output is correct
4 Correct 5 ms 5144 KB Output is correct
5 Correct 5 ms 5400 KB Output is correct
6 Correct 2 ms 4952 KB Output is correct
7 Correct 4 ms 5596 KB Output is correct
8 Correct 4 ms 5152 KB Output is correct
9 Correct 4 ms 5152 KB Output is correct
10 Correct 5 ms 5412 KB Output is correct
11 Correct 4 ms 5420 KB Output is correct
12 Correct 4 ms 5584 KB Output is correct
13 Correct 6 ms 5412 KB Output is correct
14 Correct 3 ms 1456 KB Output is correct
15 Correct 13 ms 5576 KB Output is correct
16 Partially correct 42 ms 5980 KB Partially correct - number of queries: 6999
17 Correct 4 ms 5208 KB Output is correct
18 Partially correct 40 ms 6028 KB Partially correct - number of queries: 8119
19 Correct 3 ms 5408 KB Output is correct
20 Correct 11 ms 3356 KB Output is correct
21 Correct 16 ms 5724 KB Output is correct
22 Correct 6 ms 5412 KB Output is correct
23 Correct 4 ms 5660 KB Output is correct
24 Correct 4 ms 5404 KB Output is correct
25 Correct 23 ms 5972 KB Output is correct
26 Correct 24 ms 5972 KB Output is correct
27 Correct 4 ms 5408 KB Output is correct
28 Partially correct 44 ms 6100 KB Partially correct - number of queries: 7712
29 Partially correct 36 ms 5708 KB Partially correct - number of queries: 5949
30 Partially correct 42 ms 6256 KB Partially correct - number of queries: 8042
31 Correct 3 ms 5152 KB Output is correct
32 Correct 6 ms 5660 KB Output is correct
33 Correct 0 ms 340 KB Output is correct
34 Correct 13 ms 5680 KB Output is correct
35 Correct 4 ms 5408 KB Output is correct
36 Correct 10 ms 5464 KB Output is correct
37 Correct 5 ms 5416 KB Output is correct
38 Correct 4 ms 5580 KB Output is correct
39 Correct 22 ms 5952 KB Output is correct
40 Partially correct 34 ms 6048 KB Partially correct - number of queries: 6956
41 Partially correct 28 ms 6008 KB Partially correct - number of queries: 5070
42 Partially correct 27 ms 6240 KB Partially correct - number of queries: 5070
43 Correct 19 ms 5428 KB Output is correct
44 Correct 18 ms 6000 KB Output is correct
45 Correct 20 ms 5400 KB Output is correct
46 Correct 4 ms 5580 KB Output is correct
47 Correct 17 ms 5960 KB Output is correct
48 Partially correct 30 ms 5712 KB Partially correct - number of queries: 6150
49 Correct 8 ms 5412 KB Output is correct
50 Partially correct 49 ms 5836 KB Partially correct - number of queries: 8099
51 Correct 17 ms 5460 KB Output is correct
52 Correct 4 ms 5400 KB Output is correct
53 Correct 4 ms 5580 KB Output is correct
54 Correct 18 ms 5944 KB Output is correct
55 Correct 5 ms 5400 KB Output is correct
56 Partially correct 44 ms 5732 KB Partially correct - number of queries: 8096
57 Partially correct 37 ms 6280 KB Partially correct - number of queries: 6029
58 Partially correct 30 ms 5748 KB Partially correct - number of queries: 6126
59 Partially correct 27 ms 5996 KB Partially correct - number of queries: 5070
60 Correct 23 ms 5960 KB Output is correct
61 Correct 5 ms 5656 KB Output is correct
62 Correct 4 ms 5408 KB Output is correct
63 Correct 6 ms 5404 KB Output is correct
64 Correct 4 ms 5412 KB Output is correct
65 Correct 5 ms 5416 KB Output is correct
66 Correct 6 ms 5668 KB Output is correct
67 Correct 3 ms 5408 KB Output is correct
68 Correct 4 ms 5400 KB Output is correct
69 Correct 6 ms 5488 KB Output is correct
70 Correct 3 ms 5152 KB Output is correct
71 Partially correct 36 ms 5832 KB Partially correct - number of queries: 8307
72 Correct 5 ms 5176 KB Output is correct
73 Partially correct 47 ms 5864 KB Partially correct - number of queries: 8204
74 Partially correct 40 ms 6116 KB Partially correct - number of queries: 8253
75 Correct 5 ms 5152 KB Output is correct
76 Partially correct 40 ms 6080 KB Partially correct - number of queries: 7118
77 Partially correct 42 ms 6500 KB Partially correct - number of queries: 8151
78 Correct 7 ms 5424 KB Output is correct
79 Correct 25 ms 5400 KB Output is correct
80 Partially correct 43 ms 6544 KB Partially correct - number of queries: 8141
81 Partially correct 33 ms 6272 KB Partially correct - number of queries: 8147
82 Partially correct 49 ms 5916 KB Partially correct - number of queries: 8097
83 Correct 5 ms 5148 KB Output is correct
84 Partially correct 34 ms 5456 KB Partially correct - number of queries: 6737
85 Partially correct 42 ms 5572 KB Partially correct - number of queries: 8147
86 Correct 21 ms 5708 KB Output is correct
87 Correct 4 ms 5404 KB Output is correct
88 Correct 22 ms 6172 KB Output is correct
89 Correct 23 ms 5944 KB Output is correct
90 Correct 4 ms 5408 KB Output is correct
91 Correct 15 ms 5416 KB Output is correct
92 Correct 28 ms 5696 KB Output is correct
93 Correct 26 ms 5664 KB Output is correct
94 Correct 23 ms 5912 KB Output is correct
95 Correct 27 ms 5976 KB Output is correct
96 Correct 22 ms 5948 KB Output is correct
97 Correct 23 ms 5936 KB Output is correct