oj.uz

Submission #654036

# Submission time Handle Problem Language Result Execution time Memory
654036 2022-10-29T15:39:39 Z Vladth11 Abracadabra (CEOI22_abracadabra) C++14
100 / 100
 808 ms 49208 KB 
#include <iostream>
#include <vector>
#include <set>
#include <unordered_set>
#include <algorithm>
 
#define debug(x) cerr << #x << " " << x << "\n"
#define debugs(x) cerr << #x << " " << x << " "
 
#pragma GCC optimize("Ofast")
 
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 * 4;
 
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];
        else
            break;
    }
}
 
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 385 ms 37392 KB Output is correct
2 Correct 392 ms 36152 KB Output is correct
3 Correct 392 ms 35592 KB Output is correct
4 Correct 364 ms 35372 KB Output is correct
5 Correct 372 ms 37780 KB Output is correct
6 Correct 372 ms 38256 KB Output is correct
7 Correct 386 ms 38588 KB Output is correct
8 Correct 380 ms 36948 KB Output is correct
9 Correct 369 ms 35864 KB Output is correct
10 Correct 371 ms 35560 KB Output is correct
11 Correct 375 ms 36032 KB Output is correct
12 Correct 353 ms 34232 KB Output is correct
13 Correct 389 ms 35112 KB Output is correct
14 Correct 391 ms 37140 KB Output is correct
15 Correct 374 ms 35436 KB Output is correct
16 Correct 99 ms 19184 KB Output is correct
17 Correct 351 ms 34388 KB Output is correct
18 Correct 348 ms 34304 KB Output is correct
19 Correct 81 ms 19160 KB Output is correct
20 Correct 86 ms 19156 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 466 ms 42128 KB Output is correct
2 Correct 446 ms 42284 KB Output is correct
3 Correct 366 ms 37912 KB Output is correct
4 Correct 360 ms 38080 KB Output is correct
5 Correct 367 ms 38676 KB Output is correct
6 Correct 374 ms 37796 KB Output is correct
7 Correct 450 ms 42028 KB Output is correct
8 Correct 427 ms 41048 KB Output is correct
9 Correct 332 ms 38424 KB Output is correct
10 Correct 424 ms 40912 KB Output is correct
11 Correct 341 ms 38096 KB Output is correct
12 Correct 343 ms 37676 KB Output is correct
13 Correct 422 ms 41132 KB Output is correct
14 Correct 344 ms 38344 KB Output is correct
15 Correct 487 ms 41548 KB Output is correct
16 Correct 88 ms 23580 KB Output is correct
17 Correct 395 ms 41240 KB Output is correct
18 Correct 338 ms 36284 KB Output is correct
19 Correct 170 ms 26908 KB Output is correct
20 Correct 175 ms 27232 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 152 ms 24512 KB Output is correct
2 Correct 140 ms 24048 KB Output is correct
3 Correct 159 ms 23988 KB Output is correct
4 Correct 144 ms 23744 KB Output is correct
5 Correct 146 ms 24100 KB Output is correct
6 Correct 141 ms 23712 KB Output is correct
7 Correct 160 ms 23980 KB Output is correct
8 Correct 144 ms 23688 KB Output is correct
9 Correct 130 ms 23936 KB Output is correct
10 Correct 132 ms 23568 KB Output is correct
11 Correct 133 ms 23800 KB Output is correct
12 Correct 124 ms 23500 KB Output is correct
13 Correct 129 ms 23372 KB Output is correct
14 Correct 148 ms 23652 KB Output is correct
15 Correct 118 ms 23300 KB Output is correct
16 Correct 94 ms 21488 KB Output is correct
17 Correct 136 ms 23288 KB Output is correct
18 Correct 127 ms 22448 KB Output is correct
19 Correct 84 ms 19156 KB Output is correct
20 Correct 85 ms 19156 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 385 ms 37392 KB Output is correct
2 Correct 392 ms 36152 KB Output is correct
3 Correct 392 ms 35592 KB Output is correct
4 Correct 364 ms 35372 KB Output is correct
5 Correct 372 ms 37780 KB Output is correct
6 Correct 372 ms 38256 KB Output is correct
7 Correct 386 ms 38588 KB Output is correct
8 Correct 380 ms 36948 KB Output is correct
9 Correct 369 ms 35864 KB Output is correct
10 Correct 371 ms 35560 KB Output is correct
11 Correct 375 ms 36032 KB Output is correct
12 Correct 353 ms 34232 KB Output is correct
13 Correct 389 ms 35112 KB Output is correct
14 Correct 391 ms 37140 KB Output is correct
15 Correct 374 ms 35436 KB Output is correct
16 Correct 99 ms 19184 KB Output is correct
17 Correct 351 ms 34388 KB Output is correct
18 Correct 348 ms 34304 KB Output is correct
19 Correct 81 ms 19160 KB Output is correct
20 Correct 86 ms 19156 KB Output is correct
21 Correct 466 ms 42128 KB Output is correct
22 Correct 446 ms 42284 KB Output is correct
23 Correct 366 ms 37912 KB Output is correct
24 Correct 360 ms 38080 KB Output is correct
25 Correct 367 ms 38676 KB Output is correct
26 Correct 374 ms 37796 KB Output is correct
27 Correct 450 ms 42028 KB Output is correct
28 Correct 427 ms 41048 KB Output is correct
29 Correct 332 ms 38424 KB Output is correct
30 Correct 424 ms 40912 KB Output is correct
31 Correct 341 ms 38096 KB Output is correct
32 Correct 343 ms 37676 KB Output is correct
33 Correct 422 ms 41132 KB Output is correct
34 Correct 344 ms 38344 KB Output is correct
35 Correct 487 ms 41548 KB Output is correct
36 Correct 88 ms 23580 KB Output is correct
37 Correct 395 ms 41240 KB Output is correct
38 Correct 338 ms 36284 KB Output is correct
39 Correct 170 ms 26908 KB Output is correct
40 Correct 175 ms 27232 KB Output is correct
41 Correct 152 ms 24512 KB Output is correct
42 Correct 140 ms 24048 KB Output is correct
43 Correct 159 ms 23988 KB Output is correct
44 Correct 144 ms 23744 KB Output is correct
45 Correct 146 ms 24100 KB Output is correct
46 Correct 141 ms 23712 KB Output is correct
47 Correct 160 ms 23980 KB Output is correct
48 Correct 144 ms 23688 KB Output is correct
49 Correct 130 ms 23936 KB Output is correct
50 Correct 132 ms 23568 KB Output is correct
51 Correct 133 ms 23800 KB Output is correct
52 Correct 124 ms 23500 KB Output is correct
53 Correct 129 ms 23372 KB Output is correct
54 Correct 148 ms 23652 KB Output is correct
55 Correct 118 ms 23300 KB Output is correct
56 Correct 94 ms 21488 KB Output is correct
57 Correct 136 ms 23288 KB Output is correct
58 Correct 127 ms 22448 KB Output is correct
59 Correct 84 ms 19156 KB Output is correct
60 Correct 85 ms 19156 KB Output is correct
61 Correct 808 ms 49208 KB Output is correct
62 Correct 629 ms 47840 KB Output is correct
63 Correct 685 ms 47088 KB Output is correct
64 Correct 641 ms 46832 KB Output is correct
65 Correct 618 ms 48080 KB Output is correct
66 Correct 619 ms 46744 KB Output is correct
67 Correct 528 ms 46172 KB Output is correct
68 Correct 572 ms 44960 KB Output is correct
69 Correct 510 ms 46984 KB Output is correct
70 Correct 498 ms 43992 KB Output is correct
71 Correct 436 ms 46020 KB Output is correct
72 Correct 461 ms 44272 KB Output is correct
73 Correct 451 ms 45340 KB Output is correct
74 Correct 491 ms 46428 KB Output is correct
75 Correct 473 ms 45564 KB Output is correct
76 Correct 83 ms 23576 KB Output is correct
77 Correct 495 ms 41416 KB Output is correct
78 Correct 439 ms 39712 KB Output is correct
79 Correct 73 ms 19156 KB Output is correct
80 Correct 78 ms 19240 KB Output is correct