oj.uz

Submission #654041

# Submission time Handle Problem Language Result Execution time Memory
654041 2022-10-29T15:46:27 Z Vladth11 Abracadabra (CEOI22_abracadabra) C++14
100 / 100
 746 ms 34940 KB 
#include <iostream>
#include <vector>
#include <algorithm>
 
#pragma GCC optimize("Ofast")

#define debug(x) cerr << #x << " " << x << "\n"
#define debugs(x) cerr << #x << " " << x << " "
 
using namespace std;
typedef long long ll;
typedef pair <int, int> pii;
 
const int bSize = 11;
const int bits = 17;
const int NMAX = 200001;
const int LIMIT = NMAX;
 
vector <pii> qq[LIMIT + 1];
int sol[NMAX * 5];
int v[NMAX];
int poz[NMAX];
int stiva[NMAX];
int vf;
int nxt[NMAX];
pii interval[NMAX];
int aib[NMAX];
 
void update(int node, int x) {
    for(; node < NMAX; node += node&(-node))
        aib[node] += x;
}
 
int query(int node) {
    int x = 0;
    for(; node > 0; node -= node&(-node))
        x += aib[node];
    return x;
}
 
int cb(int k){
    int r = 0, pas = (1 << bits), sum = 0;
    while(pas){
        if(r + pas < NMAX && aib[r + pas] + sum < k){
            sum += aib[r + pas];
            r += pas;
        }
        pas /= 2;
    }
    if(sum < k)
        r++;
    return r;
}
 
 
int sz(pii x) {
    if(x.second == 0)
        return 0;
    return x.second - x.first + 1;
}
 
int n;
 
void mShuffle() {
    int cine = cb(n / 2);
    if(query(cine) == n / 2) {
        return;
    }
    int dr = interval[cine].second;
    update(cine, -sz(interval[cine]));
    int pana = query(cine - 1);
    int node = n / 2;
    node -= pana;
    interval[cine] = {poz[cine], poz[cine] + node - 1};
    update(cine, sz(interval[cine]));
    int i = v[poz[cine] + node];
    while(sz(interval[i]) == 0 && poz[i] <= dr) {
        int urm = nxt[poz[i]];
        if(urm == 0)
            urm = n + 1;
        urm = min(urm, dr + 1);
        interval[i] = {poz[i], urm - 1};
        update(i, sz(interval[i]));
        if(urm != n + 1)
            i = v[urm];
    }
}
 
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int q, i;
    cin >> n >> q;
    for(i = 1; i <= n; i++) {
        cin >> v[i];
        poz[v[i]] = i;
        while(vf && v[stiva[vf]] < v[i]) {
            nxt[stiva[vf]] = i;
            vf--;
        }
        stiva[++vf] = i;
    }
    i = 1;
    while(nxt[i] != 0) {
        interval[v[i]] = {i, nxt[i] - 1};
        i = nxt[i];
    }
    interval[v[i]] = {i, n};
    for(i = 1; i <= n; i++) {
        update(i, sz(interval[i]));
    }
    for(i = 1; i <= q; i++) {
        int x, y;
        cin >> x >> y;
        x = min(x, LIMIT);
        qq[x].push_back({y, i});
    }
    for(i = 0; i <= LIMIT; i++) {
        for(auto x : qq[i]) {
            int node = x.first;
            int idx = x.second;
            int cine = cb(node);
            int pana = query(cine - 1);
            node -= pana;
            sol[idx] = v[poz[cine] + node - 1];
        }
        mShuffle();
    }
    for(i = 1; i <= q; i++) {
        cout << sol[i] << "\n";
    }
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 308 ms 23144 KB Output is correct
2 Correct 306 ms 22000 KB Output is correct
3 Correct 295 ms 21500 KB Output is correct
4 Correct 316 ms 21356 KB Output is correct
5 Correct 312 ms 23612 KB Output is correct
6 Correct 291 ms 24320 KB Output is correct
7 Correct 298 ms 24372 KB Output is correct
8 Correct 297 ms 22860 KB Output is correct
9 Correct 300 ms 21788 KB Output is correct
10 Correct 286 ms 21544 KB Output is correct
11 Correct 296 ms 21952 KB Output is correct
12 Correct 291 ms 20080 KB Output is correct
13 Correct 294 ms 21068 KB Output is correct
14 Correct 300 ms 22996 KB Output is correct
15 Correct 295 ms 21452 KB Output is correct
16 Correct 23 ms 5076 KB Output is correct
17 Correct 323 ms 20292 KB Output is correct
18 Correct 321 ms 20248 KB Output is correct
19 Correct 19 ms 5076 KB Output is correct
20 Correct 24 ms 5088 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 417 ms 28048 KB Output is correct
2 Correct 392 ms 28260 KB Output is correct
3 Correct 396 ms 23892 KB Output is correct
4 Correct 349 ms 24008 KB Output is correct
5 Correct 328 ms 24344 KB Output is correct
6 Correct 342 ms 23644 KB Output is correct
7 Correct 389 ms 28056 KB Output is correct
8 Correct 362 ms 26904 KB Output is correct
9 Correct 339 ms 24364 KB Output is correct
10 Correct 543 ms 26860 KB Output is correct
11 Correct 327 ms 23908 KB Output is correct
12 Correct 320 ms 23580 KB Output is correct
13 Correct 374 ms 27060 KB Output is correct
14 Correct 338 ms 24312 KB Output is correct
15 Correct 397 ms 27508 KB Output is correct
16 Correct 55 ms 9392 KB Output is correct
17 Correct 339 ms 27140 KB Output is correct
18 Correct 287 ms 22268 KB Output is correct
19 Correct 106 ms 12896 KB Output is correct
20 Correct 143 ms 13068 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 99 ms 10468 KB Output is correct
2 Correct 116 ms 10012 KB Output is correct
3 Correct 83 ms 9944 KB Output is correct
4 Correct 85 ms 9616 KB Output is correct
5 Correct 79 ms 10060 KB Output is correct
6 Correct 76 ms 9548 KB Output is correct
7 Correct 113 ms 9916 KB Output is correct
8 Correct 87 ms 9596 KB Output is correct
9 Correct 80 ms 9820 KB Output is correct
10 Correct 69 ms 9408 KB Output is correct
11 Correct 101 ms 9688 KB Output is correct
12 Correct 67 ms 9420 KB Output is correct
13 Correct 82 ms 9292 KB Output is correct
14 Correct 67 ms 9560 KB Output is correct
15 Correct 77 ms 9252 KB Output is correct
16 Correct 37 ms 7384 KB Output is correct
17 Correct 67 ms 9144 KB Output is correct
18 Correct 60 ms 8288 KB Output is correct
19 Correct 19 ms 5088 KB Output is correct
20 Correct 20 ms 5068 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 308 ms 23144 KB Output is correct
2 Correct 306 ms 22000 KB Output is correct
3 Correct 295 ms 21500 KB Output is correct
4 Correct 316 ms 21356 KB Output is correct
5 Correct 312 ms 23612 KB Output is correct
6 Correct 291 ms 24320 KB Output is correct
7 Correct 298 ms 24372 KB Output is correct
8 Correct 297 ms 22860 KB Output is correct
9 Correct 300 ms 21788 KB Output is correct
10 Correct 286 ms 21544 KB Output is correct
11 Correct 296 ms 21952 KB Output is correct
12 Correct 291 ms 20080 KB Output is correct
13 Correct 294 ms 21068 KB Output is correct
14 Correct 300 ms 22996 KB Output is correct
15 Correct 295 ms 21452 KB Output is correct
16 Correct 23 ms 5076 KB Output is correct
17 Correct 323 ms 20292 KB Output is correct
18 Correct 321 ms 20248 KB Output is correct
19 Correct 19 ms 5076 KB Output is correct
20 Correct 24 ms 5088 KB Output is correct
21 Correct 417 ms 28048 KB Output is correct
22 Correct 392 ms 28260 KB Output is correct
23 Correct 396 ms 23892 KB Output is correct
24 Correct 349 ms 24008 KB Output is correct
25 Correct 328 ms 24344 KB Output is correct
26 Correct 342 ms 23644 KB Output is correct
27 Correct 389 ms 28056 KB Output is correct
28 Correct 362 ms 26904 KB Output is correct
29 Correct 339 ms 24364 KB Output is correct
30 Correct 543 ms 26860 KB Output is correct
31 Correct 327 ms 23908 KB Output is correct
32 Correct 320 ms 23580 KB Output is correct
33 Correct 374 ms 27060 KB Output is correct
34 Correct 338 ms 24312 KB Output is correct
35 Correct 397 ms 27508 KB Output is correct
36 Correct 55 ms 9392 KB Output is correct
37 Correct 339 ms 27140 KB Output is correct
38 Correct 287 ms 22268 KB Output is correct
39 Correct 106 ms 12896 KB Output is correct
40 Correct 143 ms 13068 KB Output is correct
41 Correct 99 ms 10468 KB Output is correct
42 Correct 116 ms 10012 KB Output is correct
43 Correct 83 ms 9944 KB Output is correct
44 Correct 85 ms 9616 KB Output is correct
45 Correct 79 ms 10060 KB Output is correct
46 Correct 76 ms 9548 KB Output is correct
47 Correct 113 ms 9916 KB Output is correct
48 Correct 87 ms 9596 KB Output is correct
49 Correct 80 ms 9820 KB Output is correct
50 Correct 69 ms 9408 KB Output is correct
51 Correct 101 ms 9688 KB Output is correct
52 Correct 67 ms 9420 KB Output is correct
53 Correct 82 ms 9292 KB Output is correct
54 Correct 67 ms 9560 KB Output is correct
55 Correct 77 ms 9252 KB Output is correct
56 Correct 37 ms 7384 KB Output is correct
57 Correct 67 ms 9144 KB Output is correct
58 Correct 60 ms 8288 KB Output is correct
59 Correct 19 ms 5088 KB Output is correct
60 Correct 20 ms 5068 KB Output is correct
61 Correct 746 ms 34940 KB Output is correct
62 Correct 660 ms 33748 KB Output is correct
63 Correct 596 ms 32832 KB Output is correct
64 Correct 552 ms 32668 KB Output is correct
65 Correct 679 ms 34044 KB Output is correct
66 Correct 647 ms 32644 KB Output is correct
67 Correct 458 ms 32052 KB Output is correct
68 Correct 512 ms 31000 KB Output is correct
69 Correct 574 ms 33040 KB Output is correct
70 Correct 482 ms 29708 KB Output is correct
71 Correct 402 ms 31748 KB Output is correct
72 Correct 500 ms 30216 KB Output is correct
73 Correct 430 ms 31168 KB Output is correct
74 Correct 465 ms 32352 KB Output is correct
75 Correct 579 ms 31240 KB Output is correct
76 Correct 40 ms 9408 KB Output is correct
77 Correct 442 ms 27184 KB Output is correct
78 Correct 342 ms 25624 KB Output is correct
79 Correct 21 ms 5076 KB Output is correct
80 Correct 19 ms 5084 KB Output is correct