oj.uz

Submission #255765

# Submission time Handle Problem Language Result Execution time Memory
255765 2020-08-01T19:59:27 Z IgorI Xylophone (JOI18_xylophone) C++17
100 / 100
 413 ms 616 KB 
#include <bits/stdc++.h>
#include <xylophone.h>

#define all(x) (x).begin(), (x).end()

using namespace std;

typedef long long ll;

int n;

int okay(vector<int> q)
{
    int pos1 = 0, posn = 0;
    vector<int> cnt(n + 1);
    for (int i = 1; i <= n; i++)
    {
        if (q[i] < 1 || q[i] > n) return 0;
        cnt[q[i]]++;
        if (cnt[q[i]] == 2) return 0;
        if (q[i] == 1) pos1 = i;
        if (q[i] == n) posn = i;
    }
    return pos1 < posn;
}

void solve(int n0)
{
    n = n0;
    vector<int> a(n), b(n);
    for (int i = 1; i + 1 <= n; i++)
    {
        a[i] = query(i, i + 1);
    }
    for (int i = 1; i + 2 <= n; i++)
    {
        b[i] = query(i, i + 2);
    }
    vector<int> dir(n);
    dir[1] = 1;
    for (int i = 1; i + 2 <= n; i++)
    {
        if (b[i] == a[i] + a[i + 1]) dir[i + 1] = dir[i];
        else dir[i + 1] = dir[i] * (-1);
    }
    vector<vector<int> > ans;
    for (int i = 1; i <= n; i++)
    {
        vector<int> q(n + 1);
        q[1] = i;
        q[2] = dir[1] * a[1] + q[1];
        for (int j = 3; j <= n; j++)
        {
            q[j] = q[j - 1] + dir[j - 1] * a[j - 1];
        }
        if (okay(q)) ans.push_back(q);
    }
    for (int i = 1; i < n; i++) dir[i] *= -1;
    for (int i = 1; i <= n; i++)
    {
        vector<int> q(n + 1);
        q[1] = i;
        q[2] = dir[1] * a[1] + q[1];
        for (int j = 3; j <= n; j++)
        {
            q[j] = q[j - 1] + dir[j - 1] * a[j - 1];
        }
        if (okay(q)) ans.push_back(q);
    }
    for (auto e : ans)
    {
        for (int i = 1; i <= n; i++)
        {
            answer(i, e[i]);
        }
    }
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 3 ms 256 KB Output is correct
5 Correct 3 ms 256 KB Output is correct
6 Correct 4 ms 256 KB Output is correct
7 Correct 3 ms 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 372 KB Output is correct
10 Correct 3 ms 256 KB Output is correct
11 Correct 3 ms 256 KB Output is correct
12 Correct 3 ms 256 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 2 ms 256 KB Output is correct

Subtask #2
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 3 ms 256 KB Output is correct
5 Correct 3 ms 256 KB Output is correct
6 Correct 4 ms 256 KB Output is correct
7 Correct 3 ms 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 372 KB Output is correct
10 Correct 3 ms 256 KB Output is correct
11 Correct 3 ms 256 KB Output is correct
12 Correct 3 ms 256 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 11 ms 384 KB Output is correct
18 Correct 37 ms 376 KB Output is correct
19 Correct 30 ms 376 KB Output is correct
20 Correct 25 ms 384 KB Output is correct
21 Correct 25 ms 384 KB Output is correct
22 Correct 22 ms 376 KB Output is correct
23 Correct 47 ms 384 KB Output is correct
24 Correct 25 ms 376 KB Output is correct
25 Correct 21 ms 376 KB Output is correct
26 Correct 28 ms 376 KB Output is correct
27 Correct 28 ms 504 KB Output is correct
28 Correct 43 ms 384 KB Output is correct
29 Correct 35 ms 384 KB Output is correct
30 Correct 35 ms 400 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 3 ms 256 KB Output is correct
5 Correct 3 ms 256 KB Output is correct
6 Correct 4 ms 256 KB Output is correct
7 Correct 3 ms 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 372 KB Output is correct
10 Correct 3 ms 256 KB Output is correct
11 Correct 3 ms 256 KB Output is correct
12 Correct 3 ms 256 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 11 ms 384 KB Output is correct
18 Correct 37 ms 376 KB Output is correct
19 Correct 30 ms 376 KB Output is correct
20 Correct 25 ms 384 KB Output is correct
21 Correct 25 ms 384 KB Output is correct
22 Correct 22 ms 376 KB Output is correct
23 Correct 47 ms 384 KB Output is correct
24 Correct 25 ms 376 KB Output is correct
25 Correct 21 ms 376 KB Output is correct
26 Correct 28 ms 376 KB Output is correct
27 Correct 28 ms 504 KB Output is correct
28 Correct 43 ms 384 KB Output is correct
29 Correct 35 ms 384 KB Output is correct
30 Correct 35 ms 400 KB Output is correct
31 Correct 95 ms 384 KB Output is correct
32 Correct 156 ms 384 KB Output is correct
33 Correct 266 ms 508 KB Output is correct
34 Correct 336 ms 504 KB Output is correct
35 Correct 323 ms 504 KB Output is correct
36 Correct 408 ms 508 KB Output is correct
37 Correct 408 ms 504 KB Output is correct
38 Correct 328 ms 540 KB Output is correct
39 Correct 334 ms 540 KB Output is correct
40 Correct 361 ms 536 KB Output is correct
41 Correct 286 ms 504 KB Output is correct
42 Correct 413 ms 536 KB Output is correct
43 Correct 413 ms 504 KB Output is correct
44 Correct 320 ms 504 KB Output is correct
45 Correct 320 ms 616 KB Output is correct
46 Correct 286 ms 504 KB Output is correct
47 Correct 270 ms 504 KB Output is correct
48 Correct 324 ms 504 KB Output is correct
49 Correct 324 ms 504 KB Output is correct
50 Correct 321 ms 484 KB Output is correct
51 Correct 328 ms 504 KB Output is correct
52 Correct 364 ms 536 KB Output is correct
53 Correct 337 ms 484 KB Output is correct
54 Correct 317 ms 504 KB Output is correct
55 Correct 329 ms 408 KB Output is correct
56 Correct 306 ms 536 KB Output is correct
57 Correct 322 ms 536 KB Output is correct
58 Correct 327 ms 504 KB Output is correct
59 Correct 277 ms 540 KB Output is correct
60 Correct 282 ms 504 KB Output is correct