oj.uz

Submission #677707

# Submission time Handle Problem Language Result Execution time Memory
677707 2023-01-04T08:06:28 Z bashkort The Big Prize (IOI17_prize) C++17
100 / 100
 46 ms 344 KB 
#include <bits/stdc++.h>
#include "prize.h"

using namespace std;
using Query = vector<int>;

int find_best(int n) {
    auto valid = [&](Query x) {
        return x[0] + x[1] == 0;
    };

    int ans = -1;

    function<void(int, int, Query, Query)> dfs = [&](int l, int r, Query L, Query R) {
        if (l + 1 >= r || ans != -1 || L == R) {
            return;
        }

        int mid = (l + r) >> 1;
        Query M = ask(mid);

        if (valid(M)) {
            ans = mid;
            return;
        }

        if (L[0] + L[1] == R[0] + R[1] && L[0] + L[1] > M[0] + M[1] && L[1] - R[1] == 1) {
            return;
        }

        dfs(l, mid, L, M), dfs(mid, r, M, R);
    };

    Query L = ask(0);
    if (valid(L)) {
        return 0;
    }

    Query R = ask(n - 1);
    if (valid(R)) {
        return n - 1;
    }

    dfs(0, n - 1, L, R);

    return ans;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 288 KB Output is correct
3 Correct 1 ms 288 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 0 ms 292 KB Output is correct
7 Correct 0 ms 292 KB Output is correct
8 Correct 0 ms 300 KB Output is correct
9 Correct 0 ms 292 KB Output is correct
10 Correct 1 ms 208 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 0 ms 288 KB Output is correct
4 Correct 0 ms 292 KB Output is correct
5 Correct 1 ms 272 KB Output is correct
6 Correct 1 ms 284 KB Output is correct
7 Correct 0 ms 300 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 0 ms 288 KB Output is correct
10 Correct 0 ms 208 KB Output is correct
11 Correct 3 ms 296 KB Output is correct
12 Correct 0 ms 208 KB Output is correct
13 Correct 4 ms 208 KB Output is correct
14 Correct 2 ms 208 KB Output is correct
15 Correct 6 ms 208 KB Output is correct
16 Correct 28 ms 276 KB Output is correct
17 Correct 1 ms 208 KB Output is correct
18 Correct 28 ms 208 KB Output is correct
19 Correct 0 ms 296 KB Output is correct
20 Correct 6 ms 292 KB Output is correct
21 Correct 11 ms 208 KB Output is correct
22 Correct 2 ms 208 KB Output is correct
23 Correct 1 ms 268 KB Output is correct
24 Correct 1 ms 292 KB Output is correct
25 Correct 15 ms 292 KB Output is correct
26 Correct 15 ms 300 KB Output is correct
27 Correct 1 ms 208 KB Output is correct
28 Correct 30 ms 292 KB Output is correct
29 Correct 23 ms 208 KB Output is correct
30 Correct 17 ms 296 KB Output is correct
31 Correct 1 ms 208 KB Output is correct
32 Correct 2 ms 208 KB Output is correct
33 Correct 0 ms 208 KB Output is correct
34 Correct 6 ms 292 KB Output is correct
35 Correct 2 ms 208 KB Output is correct
36 Correct 8 ms 208 KB Output is correct
37 Correct 1 ms 292 KB Output is correct
38 Correct 1 ms 276 KB Output is correct
39 Correct 8 ms 304 KB Output is correct
40 Correct 26 ms 288 KB Output is correct
41 Correct 22 ms 268 KB Output is correct
42 Correct 15 ms 292 KB Output is correct
43 Correct 15 ms 288 KB Output is correct
44 Correct 12 ms 208 KB Output is correct
45 Correct 10 ms 208 KB Output is correct
46 Correct 1 ms 208 KB Output is correct
47 Correct 19 ms 208 KB Output is correct
48 Correct 25 ms 268 KB Output is correct
49 Correct 2 ms 276 KB Output is correct
50 Correct 24 ms 208 KB Output is correct
51 Correct 7 ms 288 KB Output is correct
52 Correct 1 ms 208 KB Output is correct
53 Correct 1 ms 208 KB Output is correct
54 Correct 14 ms 208 KB Output is correct
55 Correct 1 ms 296 KB Output is correct
56 Correct 38 ms 208 KB Output is correct
57 Correct 23 ms 292 KB Output is correct
58 Correct 23 ms 208 KB Output is correct
59 Correct 17 ms 296 KB Output is correct
60 Correct 10 ms 288 KB Output is correct
61 Correct 1 ms 296 KB Output is correct
62 Correct 1 ms 292 KB Output is correct
63 Correct 1 ms 208 KB Output is correct
64 Correct 1 ms 292 KB Output is correct
65 Correct 1 ms 284 KB Output is correct
66 Correct 1 ms 208 KB Output is correct
67 Correct 0 ms 208 KB Output is correct
68 Correct 1 ms 292 KB Output is correct
69 Correct 1 ms 292 KB Output is correct
70 Correct 1 ms 292 KB Output is correct
71 Correct 46 ms 208 KB Output is correct
72 Correct 5 ms 248 KB Output is correct
73 Correct 39 ms 208 KB Output is correct
74 Correct 40 ms 208 KB Output is correct
75 Correct 1 ms 208 KB Output is correct
76 Correct 39 ms 208 KB Output is correct
77 Correct 31 ms 292 KB Output is correct
78 Correct 7 ms 296 KB Output is correct
79 Correct 15 ms 208 KB Output is correct
80 Correct 41 ms 208 KB Output is correct
81 Correct 39 ms 208 KB Output is correct
82 Correct 40 ms 208 KB Output is correct
83 Correct 2 ms 208 KB Output is correct
84 Correct 31 ms 208 KB Output is correct
85 Correct 31 ms 208 KB Output is correct
86 Correct 2 ms 208 KB Output is correct
87 Correct 1 ms 208 KB Output is correct
88 Correct 1 ms 208 KB Output is correct
89 Correct 1 ms 208 KB Output is correct
90 Correct 1 ms 208 KB Output is correct
91 Correct 1 ms 208 KB Output is correct
92 Correct 1 ms 344 KB Output is correct
93 Correct 3 ms 208 KB Output is correct
94 Correct 4 ms 296 KB Output is correct
95 Correct 4 ms 208 KB Output is correct
96 Correct 3 ms 208 KB Output is correct
97 Correct 0 ms 208 KB Output is correct