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Submission #994535

# Submission time Handle Problem Language Result Execution time Memory
994535 2024-06-07T18:53:33 Z biank Abracadabra (CEOI22_abracadabra) C++14
100 / 100
 419 ms 48208 KB 
#include <bits/stdc++.h>

using namespace std;

const int SZ = 1 << 18;

int st[2 * SZ];

void update(int i, int v) {
    for (st[i += SZ] = v; i /= 2;) st[i] = st[2 * i] + st[2 * i + 1];
}

pair<int, int> search(int x) {
    int u = 1;
    while (u < SZ) {
        u *= 2;
        if (st[u] <= x) {
            x -= st[u];
            u++;
        }
    }
    return {u - SZ, x};
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    
    int n, q;
    cin >> n >> q;
    vector<int> a(n), r(n), pos(n);
    vector<pair<int, int>> query[n + 1];
    for (int i = 0; i < n; i++) {
        cin >> a[i];
        --a[i];
        pos[a[i]] = i;
    }
    for (int i = n - 1; i >= 0; i--) {
        r[i] = i + 1;
        while (r[i] < n && a[r[i]] < a[i]) {
            r[i] = r[r[i]];
        }
    }
    for (int i = 0; i < n; i = r[i]) {
        update(a[i], r[i] - i);
    }
    for (int idx = 0; idx < q; idx++) {
        int t, i;
        cin >> t >> i;
        t = min(t, n);
        --i;
        query[t].emplace_back(i, idx);
    }
    vector<int> res(q);
    for (int t = 0; t <= n; t++) {
        for (auto [i, idx] : query[t]) {
            auto [val, d] = search(i);
            res[idx] = a[pos[val] + d];
        }
        auto [val, d] = search(n / 2);
        if (d == 0) continue;
        int tot = st[val + SZ];
        update(val, d);
        for (int i = pos[val] + d; i < pos[val] + tot; i = r[i]) {
            update(a[i], min(r[i], pos[val] + tot) - i);
        }
    }
    for (int i = 0; i < q; i++) {
        cout << res[i] + 1 << '\n';
    }
    
    return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:56:19: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   56 |         for (auto [i, idx] : query[t]) {
      |                   ^
Main.cpp:57:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   57 |             auto [val, d] = search(i);
      |                  ^
Main.cpp:60:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   60 |         auto [val, d] = search(n / 2);
      |              ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 176 ms 18516 KB Output is correct
2 Correct 191 ms 24660 KB Output is correct
3 Correct 187 ms 24144 KB Output is correct
4 Correct 146 ms 22740 KB Output is correct
5 Correct 152 ms 26208 KB Output is correct
6 Correct 148 ms 25948 KB Output is correct
7 Correct 168 ms 27232 KB Output is correct
8 Correct 142 ms 24672 KB Output is correct
9 Correct 154 ms 23404 KB Output is correct
10 Correct 155 ms 23380 KB Output is correct
11 Correct 142 ms 23636 KB Output is correct
12 Correct 184 ms 21136 KB Output is correct
13 Correct 156 ms 22116 KB Output is correct
14 Correct 176 ms 25248 KB Output is correct
15 Correct 160 ms 23252 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 177 ms 21320 KB Output is correct
18 Correct 148 ms 21160 KB Output is correct
19 Correct 0 ms 352 KB Output is correct
20 Correct 0 ms 352 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 225 ms 27072 KB Output is correct
2 Correct 231 ms 40640 KB Output is correct
3 Correct 176 ms 34824 KB Output is correct
4 Correct 173 ms 33980 KB Output is correct
5 Correct 181 ms 35000 KB Output is correct
6 Correct 178 ms 33212 KB Output is correct
7 Correct 216 ms 40380 KB Output is correct
8 Correct 250 ms 39284 KB Output is correct
9 Correct 170 ms 34744 KB Output is correct
10 Correct 191 ms 38368 KB Output is correct
11 Correct 157 ms 33308 KB Output is correct
12 Correct 155 ms 33872 KB Output is correct
13 Correct 177 ms 36936 KB Output is correct
14 Correct 200 ms 34232 KB Output is correct
15 Correct 199 ms 38588 KB Output is correct
16 Correct 20 ms 10076 KB Output is correct
17 Correct 202 ms 35360 KB Output is correct
18 Correct 136 ms 30456 KB Output is correct
19 Correct 59 ms 15052 KB Output is correct
20 Correct 59 ms 16584 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 7760 KB Output is correct
2 Correct 42 ms 8784 KB Output is correct
3 Correct 46 ms 8812 KB Output is correct
4 Correct 35 ms 8536 KB Output is correct
5 Correct 50 ms 9044 KB Output is correct
6 Correct 35 ms 8400 KB Output is correct
7 Correct 37 ms 9048 KB Output is correct
8 Correct 36 ms 8528 KB Output is correct
9 Correct 39 ms 8784 KB Output is correct
10 Correct 29 ms 8300 KB Output is correct
11 Correct 28 ms 8528 KB Output is correct
12 Correct 28 ms 8288 KB Output is correct
13 Correct 30 ms 8024 KB Output is correct
14 Correct 29 ms 8536 KB Output is correct
15 Correct 27 ms 8288 KB Output is correct
16 Correct 11 ms 5208 KB Output is correct
17 Correct 36 ms 7632 KB Output is correct
18 Correct 24 ms 6864 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 468 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 176 ms 18516 KB Output is correct
2 Correct 191 ms 24660 KB Output is correct
3 Correct 187 ms 24144 KB Output is correct
4 Correct 146 ms 22740 KB Output is correct
5 Correct 152 ms 26208 KB Output is correct
6 Correct 148 ms 25948 KB Output is correct
7 Correct 168 ms 27232 KB Output is correct
8 Correct 142 ms 24672 KB Output is correct
9 Correct 154 ms 23404 KB Output is correct
10 Correct 155 ms 23380 KB Output is correct
11 Correct 142 ms 23636 KB Output is correct
12 Correct 184 ms 21136 KB Output is correct
13 Correct 156 ms 22116 KB Output is correct
14 Correct 176 ms 25248 KB Output is correct
15 Correct 160 ms 23252 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 177 ms 21320 KB Output is correct
18 Correct 148 ms 21160 KB Output is correct
19 Correct 0 ms 352 KB Output is correct
20 Correct 0 ms 352 KB Output is correct
21 Correct 225 ms 27072 KB Output is correct
22 Correct 231 ms 40640 KB Output is correct
23 Correct 176 ms 34824 KB Output is correct
24 Correct 173 ms 33980 KB Output is correct
25 Correct 181 ms 35000 KB Output is correct
26 Correct 178 ms 33212 KB Output is correct
27 Correct 216 ms 40380 KB Output is correct
28 Correct 250 ms 39284 KB Output is correct
29 Correct 170 ms 34744 KB Output is correct
30 Correct 191 ms 38368 KB Output is correct
31 Correct 157 ms 33308 KB Output is correct
32 Correct 155 ms 33872 KB Output is correct
33 Correct 177 ms 36936 KB Output is correct
34 Correct 200 ms 34232 KB Output is correct
35 Correct 199 ms 38588 KB Output is correct
36 Correct 20 ms 10076 KB Output is correct
37 Correct 202 ms 35360 KB Output is correct
38 Correct 136 ms 30456 KB Output is correct
39 Correct 59 ms 15052 KB Output is correct
40 Correct 59 ms 16584 KB Output is correct
41 Correct 47 ms 7760 KB Output is correct
42 Correct 42 ms 8784 KB Output is correct
43 Correct 46 ms 8812 KB Output is correct
44 Correct 35 ms 8536 KB Output is correct
45 Correct 50 ms 9044 KB Output is correct
46 Correct 35 ms 8400 KB Output is correct
47 Correct 37 ms 9048 KB Output is correct
48 Correct 36 ms 8528 KB Output is correct
49 Correct 39 ms 8784 KB Output is correct
50 Correct 29 ms 8300 KB Output is correct
51 Correct 28 ms 8528 KB Output is correct
52 Correct 28 ms 8288 KB Output is correct
53 Correct 30 ms 8024 KB Output is correct
54 Correct 29 ms 8536 KB Output is correct
55 Correct 27 ms 8288 KB Output is correct
56 Correct 11 ms 5208 KB Output is correct
57 Correct 36 ms 7632 KB Output is correct
58 Correct 24 ms 6864 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 1 ms 468 KB Output is correct
61 Correct 419 ms 48208 KB Output is correct
62 Correct 343 ms 46160 KB Output is correct
63 Correct 359 ms 44872 KB Output is correct
64 Correct 282 ms 44592 KB Output is correct
65 Correct 339 ms 46416 KB Output is correct
66 Correct 271 ms 44392 KB Output is correct
67 Correct 283 ms 44116 KB Output is correct
68 Correct 281 ms 40280 KB Output is correct
69 Correct 274 ms 44712 KB Output is correct
70 Correct 240 ms 40648 KB Output is correct
71 Correct 234 ms 42168 KB Output is correct
72 Correct 265 ms 41188 KB Output is correct
73 Correct 237 ms 41600 KB Output is correct
74 Correct 245 ms 43716 KB Output is correct
75 Correct 236 ms 42392 KB Output is correct
76 Correct 21 ms 10076 KB Output is correct
77 Correct 265 ms 36360 KB Output is correct
78 Correct 179 ms 33968 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 1 ms 348 KB Output is correct