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Submission #547580

# Submission time Handle Problem Language Result Execution time Memory
547580 2022-04-11T03:01:51 Z Monarchuwu The Big Prize (IOI17_prize) C++17
100 / 100
 53 ms 10716 KB 
#include "prize.h"
#include<set>
using namespace std;

const int MAXN = 2e5 + 8;
int ans;
int prf[MAXN];
set<int> s[MAXN];

bool dnc(int l, int r) {
    if (l > r) return false;
    int m = (l + r) >> 1;
    vector<int> a = ask(m);
    int sum = a[0] + a[1];
    prf[m] = a[0];
    if (sum == 0) { ans = m; return true; }

    auto it = s[sum].insert(m).first;
    if (it == s[sum].begin() ? a[0] : prf[*prev(it)] != prf[m])
        if (dnc(l, m - 1)) return true;

    if (next(it) == s[sum].end() ? a[1] : prf[m] != prf[*next(it)])
        if (dnc(m + 1, r)) return true;

    return false;
}

int find_best(int N) {
    dnc(0, N - 1);
    return ans;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9680 KB Output is correct
3 Correct 6 ms 9680 KB Output is correct
4 Correct 6 ms 9684 KB Output is correct
5 Correct 6 ms 9684 KB Output is correct
6 Correct 6 ms 9712 KB Output is correct
7 Correct 5 ms 9680 KB Output is correct
8 Correct 5 ms 9696 KB Output is correct
9 Correct 5 ms 9680 KB Output is correct
10 Correct 5 ms 9680 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9692 KB Output is correct
2 Correct 7 ms 9684 KB Output is correct
3 Correct 5 ms 9688 KB Output is correct
4 Correct 6 ms 9688 KB Output is correct
5 Correct 6 ms 9680 KB Output is correct
6 Correct 6 ms 9680 KB Output is correct
7 Correct 6 ms 9684 KB Output is correct
8 Correct 6 ms 9692 KB Output is correct
9 Correct 6 ms 9680 KB Output is correct
10 Correct 6 ms 9680 KB Output is correct
11 Correct 8 ms 9812 KB Output is correct
12 Correct 5 ms 9680 KB Output is correct
13 Correct 10 ms 10056 KB Output is correct
14 Correct 7 ms 9680 KB Output is correct
15 Correct 12 ms 9812 KB Output is correct
16 Correct 23 ms 10424 KB Output is correct
17 Correct 6 ms 9680 KB Output is correct
18 Correct 43 ms 10564 KB Output is correct
19 Correct 6 ms 9692 KB Output is correct
20 Correct 15 ms 9800 KB Output is correct
21 Correct 21 ms 10016 KB Output is correct
22 Correct 7 ms 9764 KB Output is correct
23 Correct 6 ms 9692 KB Output is correct
24 Correct 5 ms 9680 KB Output is correct
25 Correct 26 ms 10152 KB Output is correct
26 Correct 24 ms 10116 KB Output is correct
27 Correct 5 ms 9684 KB Output is correct
28 Correct 23 ms 10500 KB Output is correct
29 Correct 30 ms 10444 KB Output is correct
30 Correct 39 ms 10656 KB Output is correct
31 Correct 5 ms 9680 KB Output is correct
32 Correct 8 ms 9928 KB Output is correct
33 Correct 5 ms 9680 KB Output is correct
34 Correct 18 ms 9940 KB Output is correct
35 Correct 6 ms 9752 KB Output is correct
36 Correct 13 ms 9796 KB Output is correct
37 Correct 6 ms 9680 KB Output is correct
38 Correct 5 ms 9688 KB Output is correct
39 Correct 29 ms 10092 KB Output is correct
40 Correct 43 ms 10584 KB Output is correct
41 Correct 17 ms 10216 KB Output is correct
42 Correct 27 ms 10240 KB Output is correct
43 Correct 26 ms 10192 KB Output is correct
44 Correct 18 ms 10068 KB Output is correct
45 Correct 12 ms 10056 KB Output is correct
46 Correct 6 ms 9680 KB Output is correct
47 Correct 21 ms 10056 KB Output is correct
48 Correct 31 ms 10308 KB Output is correct
49 Correct 9 ms 9688 KB Output is correct
50 Correct 26 ms 10660 KB Output is correct
51 Correct 13 ms 10000 KB Output is correct
52 Correct 7 ms 9684 KB Output is correct
53 Correct 7 ms 9812 KB Output is correct
54 Correct 22 ms 10056 KB Output is correct
55 Correct 7 ms 9680 KB Output is correct
56 Correct 53 ms 10568 KB Output is correct
57 Correct 32 ms 10312 KB Output is correct
58 Correct 34 ms 10352 KB Output is correct
59 Correct 25 ms 10196 KB Output is correct
60 Correct 23 ms 10212 KB Output is correct
61 Correct 6 ms 9808 KB Output is correct
62 Correct 5 ms 9688 KB Output is correct
63 Correct 7 ms 9824 KB Output is correct
64 Correct 6 ms 9808 KB Output is correct
65 Correct 5 ms 9696 KB Output is correct
66 Correct 6 ms 9680 KB Output is correct
67 Correct 6 ms 9696 KB Output is correct
68 Correct 6 ms 9680 KB Output is correct
69 Correct 5 ms 9680 KB Output is correct
70 Correct 6 ms 9684 KB Output is correct
71 Correct 40 ms 10592 KB Output is correct
72 Correct 10 ms 10064 KB Output is correct
73 Correct 41 ms 10716 KB Output is correct
74 Correct 51 ms 10608 KB Output is correct
75 Correct 6 ms 9832 KB Output is correct
76 Correct 45 ms 10556 KB Output is correct
77 Correct 46 ms 10568 KB Output is correct
78 Correct 11 ms 10064 KB Output is correct
79 Correct 26 ms 10492 KB Output is correct
80 Correct 50 ms 10600 KB Output is correct
81 Correct 48 ms 10568 KB Output is correct
82 Correct 39 ms 10572 KB Output is correct
83 Correct 7 ms 9808 KB Output is correct
84 Correct 38 ms 10568 KB Output is correct
85 Correct 50 ms 10552 KB Output is correct
86 Correct 11 ms 10008 KB Output is correct
87 Correct 8 ms 9808 KB Output is correct
88 Correct 12 ms 9964 KB Output is correct
89 Correct 9 ms 10004 KB Output is correct
90 Correct 6 ms 9808 KB Output is correct
91 Correct 11 ms 9952 KB Output is correct
92 Correct 6 ms 9696 KB Output is correct
93 Correct 8 ms 9936 KB Output is correct
94 Correct 9 ms 9936 KB Output is correct
95 Correct 7 ms 9936 KB Output is correct
96 Correct 8 ms 9936 KB Output is correct
97 Correct 5 ms 9680 KB Output is correct