oj.uz

Submission #894588

# Submission time Handle Problem Language Result Execution time Memory
894588 2023-12-28T13:28:39 Z lunaTu Xylophone (JOI18_xylophone) C++17
47 / 100
 67 ms 596 KB 
#include <bits/stdc++.h>
#define ff first
#define ss second
#define all(x) x.begin(), x.end()
#include "xylophone.h"
typedef long long ll;
using namespace std;

void solve(int N) {

    vector<int> a(N + 1), u(2 * N + 1);

    int l = 1, r = N + 1;
    while (r - l > 1) {
        int m = (l + r) / 2;

        int get = 0;
        if (m < N) get = query(m, N);

        if (get != N - 1) r = m;
        else l = m;
    }

    answer(l, 1);
    a[l] = 1;
    u[1] = 1;
    if (l != N) {
        a[l + 1] = 1 + query(l, l + 1);
        answer(l + 1, a[l + 1]);
        u[a[l + 1]] = 1;
    }
    if (l != 1) {
        a[l - 1] = 1 + query(l - 1, l);
        answer(l - 1, a[l - 1]);
		u[a[l - 1]] = 1;
    }

    for (int i = l + 2; i <= N; i++) {
        int x = query(i - 2, i);

        int r = abs(a[i - 1] - a[i - 2]) - x;

        if (a[i - 1] < a[i - 2]) {
            if (r == 0) {
                int y = -1;
                for (int j = a[i - 1] + 1; j < a[i - 2]; j++) {
                    if (!u[j]) {
                        if (y == -1) y = j;
                        else {
                            y = -1;
                            break;
                        }
                    }
                }
                if (y == -1) y = a[i - 1] + query(i - 1, i);
                a[i] = y;
            }
            else {
                if (a[i - 2] <= x + 1 || u[a[i - 2] - x]) a[i] = a[i - 1] + x;
                else if (a[i - 1] > N - x || u[a[i - 1] + x]) a[i] = a[i - 2] - x;
                else {
                    int y = query(i - 1, i);
                    if (y == x) a[i] = a[i - 1] + x;
                    else a[i] = a[i - 2] - x;
                }
            }
        }
        else {
            if (r == 0) {
                int y = -1;
                for (int j = a[i - 2] + 1; j < a[i - 1]; j++) {
                    if (!u[j]) {
                        if (y == -1) y = j;
                        else {
                            y = -1;
                            break;
                        }
                    }
                }
                if (y == -1) y = a[i - 1] - query(i - 1, i);
                a[i] = y;
            }
            else {
                if (a[i - 1] <= x + 1 || u[a[i - 1] - x]) a[i] = a[i - 2] + x;
                else if (a[i - 2] > N - x || u[a[i - 2] + x]) a[i] = a[i - 1] - x;
                else {
                    int y = query(i - 1, i);
                    if (y == x) a[i] = a[i - 1] - x;
                    else a[i] = a[i - 2] + x;
                }
            }
        }

        answer(i, a[i]);
        u[a[i]] = 1;
    }

    for (int i = l - 2; i >= 1; i--) {
        int x = query(i, i + 2);
        int r = abs(a[i + 1] - a[i + 2]) - x;

        if (a[i + 1] < a[i + 2]) {
            if (r == 0) {
                int y = -1;
                for (int j = a[i + 1] + 1; j < a[i + 2]; j++) {
                    if (!u[j]) {
                        if (y == -1) y = j;
                        else {
                            y = -1;
                            break;
                        }
                    }
                }
                if (y == -1) y = a[i + 1] + query(i, i + 1);
                a[i] = y;
            }
            else {
                if (a[i + 2] <= x + 1 || u[a[i + 2] - x]) a[i] = a[i + 1] + x;
                else if (a[i + 1] > N - x || u[a[i + 1] + x]) a[i] = a[i + 2] - x;
                else {
                    int y = query(i, i + 1);
                    if (y == x) a[i] = a[i + 1] + x;
                    else a[i] = a[i + 2] - x;
                }
            }
        }
        else {
            if (r == 0) {
                int y = -1;
                for (int j = a[i + 2] + 1; j < a[i + 1]; j++) {
                    if (!u[j]) {
                        if (y == -1) y = j;
                        else {
                            y = -1;
                            break;
                        }
                    }
                }
                if (y == -1) y = a[i + 1] - query(i, i + 1);
                a[i] = y;
            }
            else {
                if (a[i + 1] <= x + 1 || u[a[i + 1] - x]) a[i] = a[i + 2] + x;
                else if (a[i + 2] > N - x || u[a[i + 2] + x]) a[i] = a[i + 1] - x;
                else {
                    int y = query(i, i + 1);
                    if (y == x) a[i] = a[i + 1] - x;
                    else a[i] = a[i + 2] + x;
                }
            }
        }

        answer(i, a[i]);
        u[a[i]] = 1;
    }
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct

Subtask #2
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 5 ms 344 KB Output is correct
18 Correct 5 ms 344 KB Output is correct
19 Correct 7 ms 344 KB Output is correct
20 Correct 7 ms 344 KB Output is correct
21 Correct 7 ms 344 KB Output is correct
22 Correct 6 ms 344 KB Output is correct
23 Correct 4 ms 344 KB Output is correct
24 Correct 7 ms 344 KB Output is correct
25 Correct 7 ms 344 KB Output is correct
26 Correct 8 ms 344 KB Output is correct
27 Correct 6 ms 344 KB Output is correct
28 Correct 8 ms 344 KB Output is correct
29 Correct 11 ms 596 KB Output is correct
30 Correct 5 ms 344 KB Output is correct

Subtask #3
0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 5 ms 344 KB Output is correct
18 Correct 5 ms 344 KB Output is correct
19 Correct 7 ms 344 KB Output is correct
20 Correct 7 ms 344 KB Output is correct
21 Correct 7 ms 344 KB Output is correct
22 Correct 6 ms 344 KB Output is correct
23 Correct 4 ms 344 KB Output is correct
24 Correct 7 ms 344 KB Output is correct
25 Correct 7 ms 344 KB Output is correct
26 Correct 8 ms 344 KB Output is correct
27 Correct 6 ms 344 KB Output is correct
28 Correct 8 ms 344 KB Output is correct
29 Correct 11 ms 596 KB Output is correct
30 Correct 5 ms 344 KB Output is correct
31 Correct 16 ms 344 KB Output is correct
32 Correct 24 ms 344 KB Output is correct
33 Correct 38 ms 344 KB Output is correct
34 Correct 37 ms 344 KB Output is correct
35 Correct 40 ms 344 KB Output is correct
36 Correct 24 ms 344 KB Output is correct
37 Incorrect 67 ms 344 KB Wrong Answer [2]
38 Halted 0 ms 0 KB -