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Submission #227751

# Submission time Handle Problem Language Result Execution time Memory
227751 2020-04-28T16:36:24 Z emil_physmath Xoractive (IZhO19_xoractive) C++17
100 / 100
 8 ms 560 KB 
#include <algorithm>
#include "interactive.h"
#include <vector>
#include <map>
#include <set>
#include <iostream>
using namespace std;
using llong = long long;

set<int> atbit[100];

vector<int> guess(int n)
{
    vector<int> res(n + 1);
    res[1] = ask(1);
    set<int> anses;
    for (int bit = 0; (1 << bit) <= n; ++bit)
    {
        vector<int> ind;
        for (int i = 2; i <= n; ++i)
            if (i & (1 << bit))
                ind.push_back(i);
        if (ind.empty()) continue;
        vector<int> b = get_pairwise_xor(ind);
        sort(b.begin(), b.end());
        ind.push_back(1);
        vector<int> a = get_pairwise_xor(ind);
        sort(a.begin(), a.end());
        vector<int> x;
        set_difference(a.begin(), a.end(), b.begin(), b.end(), back_inserter(x));
        for (int& y: x)
            y ^= res[1];
        atbit[bit].insert(x.begin(), x.end());
        atbit[bit].erase(res[1]);
        anses.insert(x.begin(), x.end());
    }
    anses.erase(res[1]);
    for (int i = 2; i <= n; ++i)
        for (int ans: anses)
        {
            bool f = true;
            for (int bit = 0; (1 << bit) <= n; ++bit)
            {
                bool g = (i & (1 << bit));
                if (atbit[bit].count(ans) != g)
                {
                    f = false;
                    break;
                }
            }
            if (f)
            {
                res[i] = ans;
                break;
            }
        }
    res.erase(res.begin());
    return res;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct

Subtask #2
94.0 / 94.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 384 KB Output is correct
2 Correct 7 ms 384 KB Output is correct
3 Correct 7 ms 384 KB Output is correct
4 Correct 7 ms 384 KB Output is correct
5 Correct 7 ms 384 KB Output is correct
6 Correct 7 ms 384 KB Output is correct
7 Correct 7 ms 384 KB Output is correct
8 Correct 7 ms 384 KB Output is correct
9 Correct 7 ms 384 KB Output is correct
10 Correct 7 ms 384 KB Output is correct
11 Correct 7 ms 384 KB Output is correct
12 Correct 7 ms 384 KB Output is correct
13 Correct 7 ms 384 KB Output is correct
14 Correct 7 ms 384 KB Output is correct
15 Correct 7 ms 384 KB Output is correct
16 Correct 7 ms 384 KB Output is correct
17 Correct 7 ms 384 KB Output is correct
18 Correct 7 ms 384 KB Output is correct
19 Correct 7 ms 384 KB Output is correct
20 Correct 7 ms 436 KB Output is correct
21 Correct 7 ms 384 KB Output is correct
22 Correct 7 ms 384 KB Output is correct
23 Correct 7 ms 384 KB Output is correct
24 Correct 7 ms 384 KB Output is correct
25 Correct 7 ms 384 KB Output is correct
26 Correct 7 ms 384 KB Output is correct
27 Correct 7 ms 384 KB Output is correct
28 Correct 7 ms 384 KB Output is correct
29 Correct 7 ms 384 KB Output is correct
30 Correct 7 ms 384 KB Output is correct
31 Correct 7 ms 384 KB Output is correct
32 Correct 7 ms 384 KB Output is correct
33 Correct 7 ms 384 KB Output is correct
34 Correct 7 ms 384 KB Output is correct
35 Correct 7 ms 384 KB Output is correct
36 Correct 7 ms 384 KB Output is correct
37 Correct 7 ms 384 KB Output is correct
38 Correct 7 ms 384 KB Output is correct
39 Correct 7 ms 384 KB Output is correct
40 Correct 7 ms 384 KB Output is correct
41 Correct 7 ms 384 KB Output is correct
42 Correct 7 ms 384 KB Output is correct
43 Correct 7 ms 384 KB Output is correct
44 Correct 7 ms 384 KB Output is correct
45 Correct 7 ms 384 KB Output is correct
46 Correct 7 ms 384 KB Output is correct
47 Correct 7 ms 384 KB Output is correct
48 Correct 7 ms 384 KB Output is correct
49 Correct 7 ms 384 KB Output is correct
50 Correct 7 ms 384 KB Output is correct
51 Correct 7 ms 384 KB Output is correct
52 Correct 7 ms 384 KB Output is correct
53 Correct 7 ms 384 KB Output is correct
54 Correct 7 ms 512 KB Output is correct
55 Correct 7 ms 384 KB Output is correct
56 Correct 7 ms 384 KB Output is correct
57 Correct 7 ms 384 KB Output is correct
58 Correct 7 ms 384 KB Output is correct
59 Correct 7 ms 384 KB Output is correct
60 Correct 7 ms 384 KB Output is correct
61 Correct 7 ms 384 KB Output is correct
62 Correct 7 ms 384 KB Output is correct
63 Correct 7 ms 384 KB Output is correct
64 Correct 7 ms 384 KB Output is correct
65 Correct 7 ms 384 KB Output is correct
66 Correct 7 ms 384 KB Output is correct
67 Correct 7 ms 384 KB Output is correct
68 Correct 7 ms 384 KB Output is correct
69 Correct 7 ms 384 KB Output is correct
70 Correct 7 ms 384 KB Output is correct
71 Correct 8 ms 384 KB Output is correct
72 Correct 7 ms 512 KB Output is correct
73 Correct 7 ms 384 KB Output is correct
74 Correct 7 ms 384 KB Output is correct
75 Correct 7 ms 384 KB Output is correct
76 Correct 7 ms 384 KB Output is correct
77 Correct 7 ms 384 KB Output is correct
78 Correct 7 ms 384 KB Output is correct
79 Correct 7 ms 384 KB Output is correct
80 Correct 7 ms 384 KB Output is correct
81 Correct 7 ms 384 KB Output is correct
82 Correct 7 ms 384 KB Output is correct
83 Correct 7 ms 384 KB Output is correct
84 Correct 7 ms 384 KB Output is correct
85 Correct 7 ms 384 KB Output is correct
86 Correct 7 ms 384 KB Output is correct
87 Correct 7 ms 384 KB Output is correct
88 Correct 7 ms 384 KB Output is correct
89 Correct 7 ms 384 KB Output is correct
90 Correct 7 ms 384 KB Output is correct
91 Correct 7 ms 384 KB Output is correct
92 Correct 7 ms 384 KB Output is correct
93 Correct 8 ms 560 KB Output is correct
94 Correct 7 ms 384 KB Output is correct
95 Correct 7 ms 384 KB Output is correct
96 Correct 7 ms 384 KB Output is correct
97 Correct 7 ms 384 KB Output is correct
98 Correct 7 ms 384 KB Output is correct
99 Correct 7 ms 384 KB Output is correct
100 Correct 7 ms 384 KB Output is correct