oj.uz

Submission #394995

# Submission time Handle Problem Language Result Execution time Memory
394995 2021-04-27T15:14:57 Z Victor Xylophone (JOI18_xylophone) C++17
100 / 100
 170 ms 452 KB 
#include "xylophone.h"

#include <bits/stdc++.h>

using namespace std;

#define rep(i, a, b) for (int i = a; i < (b); ++i)
#define per(i, a, b) for (int i = b - 1; i >= (a); --i)
#define trav(a, x) for (auto &a : x)

#define all(x) x.begin(), x.end()
#define sz(x) x.size()
#define pb push_back

#define umap unordered_map
#define uset unordered_set

typedef pair<int, int> ii;
typedef pair<int, ii> iii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<vi> vvi;
typedef long long ll;

const int INF = 1000000007;

void solve(int n) {
    int diff[5001], ans[5001], dir[5001];
    
    rep(i, 0, n - 1) diff[i] = query(i + 1, i + 2);
    rep(i, 1, n - 1) {
        int val = query(i, i + 2);
        dir[i] = val != diff[i - 1] + diff[i];
    }

    rep(i, 0, n) {
        bitset<5001> vis;
        ans[0] = i + 1;
        ans[1] = ans[0] + diff[0];
        if (ans[1] < 1 || n < ans[1]) continue;
        vis[i + 1] = vis[ans[1]] = 1;

        int cd = 1;
        bool works = 1, lo = i==0, rev = 0;

        rep(i, 1, n - 1) {
            if (ans[i] == n && !lo) rev = 1;
            if (ans[i] == 1) lo = 1;

            cd ^= dir[i];
            ans[i + 1] = ans[i] + (cd ? diff[i] : -diff[i]);

            if (ans[i + 1] < 1 || n < ans[i + 1] || vis[ans[i + 1]]) {
                works = 0;
                break;
            }
            vis[ans[i + 1]] = 1;
        }
        if (ans[n - 1] < 1 || n < ans[n - 1]) works = 0;

        if (works) {
            if (rev) rep(i, 0, n) ans[i] = n - ans[i] + 1;
            break;
        }
    }

    rep(i, 0, n) answer(i + 1, ans[i]);
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 3 ms 200 KB Output is correct
5 Correct 3 ms 200 KB Output is correct
6 Correct 3 ms 200 KB Output is correct
7 Correct 3 ms 432 KB Output is correct
8 Correct 4 ms 200 KB Output is correct
9 Correct 3 ms 200 KB Output is correct
10 Correct 4 ms 200 KB Output is correct
11 Correct 5 ms 300 KB Output is correct
12 Correct 3 ms 200 KB Output is correct
13 Correct 4 ms 200 KB Output is correct
14 Correct 2 ms 304 KB Output is correct
15 Correct 3 ms 200 KB Output is correct

Subtask #2
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 3 ms 200 KB Output is correct
5 Correct 3 ms 200 KB Output is correct
6 Correct 3 ms 200 KB Output is correct
7 Correct 3 ms 432 KB Output is correct
8 Correct 4 ms 200 KB Output is correct
9 Correct 3 ms 200 KB Output is correct
10 Correct 4 ms 200 KB Output is correct
11 Correct 5 ms 300 KB Output is correct
12 Correct 3 ms 200 KB Output is correct
13 Correct 4 ms 200 KB Output is correct
14 Correct 2 ms 304 KB Output is correct
15 Correct 3 ms 200 KB Output is correct
16 Correct 7 ms 308 KB Output is correct
17 Correct 12 ms 300 KB Output is correct
18 Correct 8 ms 296 KB Output is correct
19 Correct 25 ms 296 KB Output is correct
20 Correct 24 ms 200 KB Output is correct
21 Correct 27 ms 312 KB Output is correct
22 Correct 25 ms 428 KB Output is correct
23 Correct 27 ms 320 KB Output is correct
24 Correct 22 ms 284 KB Output is correct
25 Correct 21 ms 304 KB Output is correct
26 Correct 21 ms 308 KB Output is correct
27 Correct 17 ms 288 KB Output is correct
28 Correct 24 ms 296 KB Output is correct
29 Correct 18 ms 296 KB Output is correct
30 Correct 27 ms 304 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 3 ms 200 KB Output is correct
5 Correct 3 ms 200 KB Output is correct
6 Correct 3 ms 200 KB Output is correct
7 Correct 3 ms 432 KB Output is correct
8 Correct 4 ms 200 KB Output is correct
9 Correct 3 ms 200 KB Output is correct
10 Correct 4 ms 200 KB Output is correct
11 Correct 5 ms 300 KB Output is correct
12 Correct 3 ms 200 KB Output is correct
13 Correct 4 ms 200 KB Output is correct
14 Correct 2 ms 304 KB Output is correct
15 Correct 3 ms 200 KB Output is correct
16 Correct 7 ms 308 KB Output is correct
17 Correct 12 ms 300 KB Output is correct
18 Correct 8 ms 296 KB Output is correct
19 Correct 25 ms 296 KB Output is correct
20 Correct 24 ms 200 KB Output is correct
21 Correct 27 ms 312 KB Output is correct
22 Correct 25 ms 428 KB Output is correct
23 Correct 27 ms 320 KB Output is correct
24 Correct 22 ms 284 KB Output is correct
25 Correct 21 ms 304 KB Output is correct
26 Correct 21 ms 308 KB Output is correct
27 Correct 17 ms 288 KB Output is correct
28 Correct 24 ms 296 KB Output is correct
29 Correct 18 ms 296 KB Output is correct
30 Correct 27 ms 304 KB Output is correct
31 Correct 43 ms 304 KB Output is correct
32 Correct 77 ms 320 KB Output is correct
33 Correct 108 ms 416 KB Output is correct
34 Correct 136 ms 296 KB Output is correct
35 Correct 100 ms 440 KB Output is correct
36 Correct 53 ms 308 KB Output is correct
37 Correct 170 ms 324 KB Output is correct
38 Correct 113 ms 432 KB Output is correct
39 Correct 112 ms 332 KB Output is correct
40 Correct 105 ms 308 KB Output is correct
41 Correct 130 ms 296 KB Output is correct
42 Correct 93 ms 308 KB Output is correct
43 Correct 134 ms 304 KB Output is correct
44 Correct 90 ms 292 KB Output is correct
45 Correct 116 ms 432 KB Output is correct
46 Correct 97 ms 312 KB Output is correct
47 Correct 97 ms 424 KB Output is correct
48 Correct 122 ms 420 KB Output is correct
49 Correct 96 ms 320 KB Output is correct
50 Correct 150 ms 320 KB Output is correct
51 Correct 112 ms 352 KB Output is correct
52 Correct 84 ms 296 KB Output is correct
53 Correct 104 ms 304 KB Output is correct
54 Correct 123 ms 300 KB Output is correct
55 Correct 94 ms 324 KB Output is correct
56 Correct 87 ms 424 KB Output is correct
57 Correct 102 ms 316 KB Output is correct
58 Correct 110 ms 452 KB Output is correct
59 Correct 124 ms 320 KB Output is correct
60 Correct 108 ms 448 KB Output is correct