oj.uz

Submission #565631

# Submission time Handle Problem Language Result Execution time Memory
565631 2022-05-21T07:51:26 Z RealSnake Xylophone (JOI18_xylophone) C++14
100 / 100
 1439 ms 468 KB 
#include "bits/stdc++.h"
using namespace std;
#include "xylophone.h"

int a[5001], b1[5001], b2[5001];

bool sol(int n, int j) {
    a[j] = 1;
    int b[n + 1];
    for(int i = j - 1; i >= 1; i--) {
        int x = b1[i];
        b[i] = x;
        if(i == j - 1) {
            a[i] = x + 1;
            continue;
        }
        int y = b2[i];
        if(a[i + 1] < a[i + 2]) {
            if(a[i + 1] + x < a[i + 2]) {
                if(y == b[i + 1])
                    a[i] = a[i + 1] + x;
                else
                    a[i] = a[i + 1] - x;
            }
            else {
                if(y == a[i + 2] - (a[i + 1] - x))
                    a[i] = a[i + 1] - x;
                else
                    a[i] = a[i + 1] + x;
            }
        }
        else {
            if(a[i + 1] - x > a[i + 2]) {
                if(y == b[i + 1])
                    a[i] = a[i + 1] - x;
                else
                    a[i] = a[i + 1] + x;
            }
            else {
                if(y == (a[i + 1] + x) - a[i + 2])
                    a[i] = a[i + 1] + x;
                else
                    a[i] = a[i + 1] - x;
            }
        }
    }
    for(int i = j + 1; i <= n; i++) {
        int x = b1[i - 1];
        b[i] = x;
        if(i == j + 1) {
            a[i] = x + 1;
            continue;
        }
        int y = b2[i - 2];
        if(a[i - 1] < a[i - 2]) {
            if(a[i - 1] + x < a[i - 2]) {
                if(y == b[i - 1])
                    a[i] = a[i - 1] + x;
                else
                    a[i] = a[i - 1] - x;
            }
            else {
                if(y == a[i - 2] - (a[i - 1] - x))
                    a[i] = a[i - 1] - x;
                else
                    a[i] = a[i - 1] + x;
            }
        }
        else {
            if(a[i - 1] - x > a[i - 2]) {
                if(b[i - 1] == y)
                    a[i] = a[i - 1] - x;
                else
                    a[i] = a[i - 1] + x;
            }
            else {
                if(y == (a[i - 1] + x) - a[i - 2])
                    a[i] = a[i - 1] + x;
                else
                    a[i] = a[i - 1] - x;
            }
        }
    }
    vector<int> ve;
    for(int i = 1; i <= n; i++)
        ve.push_back(a[i]);
    sort(ve.begin(), ve.end());
    for(int i = 1; i <= n; i++) {
        if(ve[i - 1] != i)
            return 0;
    }
    return 1;
}

void solve(int n) {
    for(int i = 1; i <= n; i++) {
        a[i] = 0;
        if(i + 1 <= n)
            b1[i] = query(i, i + 1);
        if(i + 2 <= n)
            b2[i] = query(i, i + 2);
    }
    for(int i = 1; i <= n; i++) {
        if(sol(n, i))
            break;
    }
    for(int i = 1; i <= n; i++)
        answer(i, a[i]);
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 2 ms 208 KB Output is correct
4 Correct 2 ms 208 KB Output is correct
5 Correct 4 ms 208 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 3 ms 208 KB Output is correct
8 Correct 3 ms 208 KB Output is correct
9 Correct 1 ms 208 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 2 ms 208 KB Output is correct
13 Correct 2 ms 208 KB Output is correct
14 Correct 2 ms 208 KB Output is correct
15 Correct 4 ms 208 KB Output is correct

Subtask #2
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 2 ms 208 KB Output is correct
4 Correct 2 ms 208 KB Output is correct
5 Correct 4 ms 208 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 3 ms 208 KB Output is correct
8 Correct 3 ms 208 KB Output is correct
9 Correct 1 ms 208 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 2 ms 208 KB Output is correct
13 Correct 2 ms 208 KB Output is correct
14 Correct 2 ms 208 KB Output is correct
15 Correct 4 ms 208 KB Output is correct
16 Correct 6 ms 256 KB Output is correct
17 Correct 12 ms 312 KB Output is correct
18 Correct 16 ms 316 KB Output is correct
19 Correct 25 ms 316 KB Output is correct
20 Correct 32 ms 300 KB Output is correct
21 Correct 40 ms 312 KB Output is correct
22 Correct 32 ms 428 KB Output is correct
23 Correct 20 ms 300 KB Output is correct
24 Correct 49 ms 300 KB Output is correct
25 Correct 21 ms 304 KB Output is correct
26 Correct 32 ms 312 KB Output is correct
27 Correct 42 ms 316 KB Output is correct
28 Correct 28 ms 308 KB Output is correct
29 Correct 33 ms 304 KB Output is correct
30 Correct 28 ms 304 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 2 ms 208 KB Output is correct
4 Correct 2 ms 208 KB Output is correct
5 Correct 4 ms 208 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 3 ms 208 KB Output is correct
8 Correct 3 ms 208 KB Output is correct
9 Correct 1 ms 208 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 2 ms 208 KB Output is correct
13 Correct 2 ms 208 KB Output is correct
14 Correct 2 ms 208 KB Output is correct
15 Correct 4 ms 208 KB Output is correct
16 Correct 6 ms 256 KB Output is correct
17 Correct 12 ms 312 KB Output is correct
18 Correct 16 ms 316 KB Output is correct
19 Correct 25 ms 316 KB Output is correct
20 Correct 32 ms 300 KB Output is correct
21 Correct 40 ms 312 KB Output is correct
22 Correct 32 ms 428 KB Output is correct
23 Correct 20 ms 300 KB Output is correct
24 Correct 49 ms 300 KB Output is correct
25 Correct 21 ms 304 KB Output is correct
26 Correct 32 ms 312 KB Output is correct
27 Correct 42 ms 316 KB Output is correct
28 Correct 28 ms 308 KB Output is correct
29 Correct 33 ms 304 KB Output is correct
30 Correct 28 ms 304 KB Output is correct
31 Correct 113 ms 348 KB Output is correct
32 Correct 286 ms 376 KB Output is correct
33 Correct 568 ms 408 KB Output is correct
34 Correct 907 ms 444 KB Output is correct
35 Correct 922 ms 412 KB Output is correct
36 Correct 78 ms 468 KB Output is correct
37 Correct 840 ms 412 KB Output is correct
38 Correct 99 ms 344 KB Output is correct
39 Correct 624 ms 304 KB Output is correct
40 Correct 286 ms 408 KB Output is correct
41 Correct 624 ms 412 KB Output is correct
42 Correct 54 ms 432 KB Output is correct
43 Correct 829 ms 412 KB Output is correct
44 Correct 77 ms 340 KB Output is correct
45 Correct 131 ms 416 KB Output is correct
46 Correct 257 ms 408 KB Output is correct
47 Correct 93 ms 340 KB Output is correct
48 Correct 229 ms 412 KB Output is correct
49 Correct 775 ms 408 KB Output is correct
50 Correct 782 ms 412 KB Output is correct
51 Correct 87 ms 336 KB Output is correct
52 Correct 1189 ms 416 KB Output is correct
53 Correct 638 ms 424 KB Output is correct
54 Correct 286 ms 416 KB Output is correct
55 Correct 217 ms 428 KB Output is correct
56 Correct 539 ms 432 KB Output is correct
57 Correct 366 ms 412 KB Output is correct
58 Correct 1439 ms 436 KB Output is correct
59 Correct 477 ms 412 KB Output is correct
60 Correct 751 ms 412 KB Output is correct