oj.uz

Submission #654042

# Submission time Handle Problem Language Result Execution time Memory
654042 2022-10-29T15:46:39 Z Vladth11 Abracadabra (CEOI22_abracadabra) C++14
100 / 100
 756 ms 35032 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);
    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 384 ms 23204 KB Output is correct
2 Correct 344 ms 22016 KB Output is correct
3 Correct 315 ms 21540 KB Output is correct
4 Correct 358 ms 21356 KB Output is correct
5 Correct 328 ms 23580 KB Output is correct
6 Correct 317 ms 24240 KB Output is correct
7 Correct 399 ms 24364 KB Output is correct
8 Correct 421 ms 22868 KB Output is correct
9 Correct 341 ms 21708 KB Output is correct
10 Correct 308 ms 21484 KB Output is correct
11 Correct 315 ms 21864 KB Output is correct
12 Correct 329 ms 20084 KB Output is correct
13 Correct 348 ms 21004 KB Output is correct
14 Correct 330 ms 23120 KB Output is correct
15 Correct 329 ms 21348 KB Output is correct
16 Correct 23 ms 5076 KB Output is correct
17 Correct 305 ms 20284 KB Output is correct
18 Correct 318 ms 20184 KB Output is correct
19 Correct 20 ms 5076 KB Output is correct
20 Correct 20 ms 5076 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 486 ms 28040 KB Output is correct
2 Correct 395 ms 28180 KB Output is correct
3 Correct 333 ms 23816 KB Output is correct
4 Correct 351 ms 23956 KB Output is correct
5 Correct 333 ms 24452 KB Output is correct
6 Correct 315 ms 23696 KB Output is correct
7 Correct 375 ms 27984 KB Output is correct
8 Correct 391 ms 26992 KB Output is correct
9 Correct 321 ms 24268 KB Output is correct
10 Correct 354 ms 26964 KB Output is correct
11 Correct 301 ms 23964 KB Output is correct
12 Correct 341 ms 23588 KB Output is correct
13 Correct 496 ms 27032 KB Output is correct
14 Correct 382 ms 24132 KB Output is correct
15 Correct 464 ms 27504 KB Output is correct
16 Correct 50 ms 9420 KB Output is correct
17 Correct 372 ms 27180 KB Output is correct
18 Correct 289 ms 22248 KB Output is correct
19 Correct 107 ms 12816 KB Output is correct
20 Correct 172 ms 13008 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 10388 KB Output is correct
2 Correct 90 ms 10008 KB Output is correct
3 Correct 124 ms 9888 KB Output is correct
4 Correct 75 ms 9604 KB Output is correct
5 Correct 83 ms 10088 KB Output is correct
6 Correct 76 ms 9548 KB Output is correct
7 Correct 92 ms 9920 KB Output is correct
8 Correct 76 ms 9596 KB Output is correct
9 Correct 85 ms 9840 KB Output is correct
10 Correct 78 ms 9448 KB Output is correct
11 Correct 72 ms 9644 KB Output is correct
12 Correct 64 ms 9436 KB Output is correct
13 Correct 68 ms 9292 KB Output is correct
14 Correct 69 ms 9556 KB Output is correct
15 Correct 62 ms 9312 KB Output is correct
16 Correct 36 ms 7380 KB Output is correct
17 Correct 73 ms 9048 KB Output is correct
18 Correct 71 ms 8380 KB Output is correct
19 Correct 20 ms 5076 KB Output is correct
20 Correct 19 ms 5084 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 384 ms 23204 KB Output is correct
2 Correct 344 ms 22016 KB Output is correct
3 Correct 315 ms 21540 KB Output is correct
4 Correct 358 ms 21356 KB Output is correct
5 Correct 328 ms 23580 KB Output is correct
6 Correct 317 ms 24240 KB Output is correct
7 Correct 399 ms 24364 KB Output is correct
8 Correct 421 ms 22868 KB Output is correct
9 Correct 341 ms 21708 KB Output is correct
10 Correct 308 ms 21484 KB Output is correct
11 Correct 315 ms 21864 KB Output is correct
12 Correct 329 ms 20084 KB Output is correct
13 Correct 348 ms 21004 KB Output is correct
14 Correct 330 ms 23120 KB Output is correct
15 Correct 329 ms 21348 KB Output is correct
16 Correct 23 ms 5076 KB Output is correct
17 Correct 305 ms 20284 KB Output is correct
18 Correct 318 ms 20184 KB Output is correct
19 Correct 20 ms 5076 KB Output is correct
20 Correct 20 ms 5076 KB Output is correct
21 Correct 486 ms 28040 KB Output is correct
22 Correct 395 ms 28180 KB Output is correct
23 Correct 333 ms 23816 KB Output is correct
24 Correct 351 ms 23956 KB Output is correct
25 Correct 333 ms 24452 KB Output is correct
26 Correct 315 ms 23696 KB Output is correct
27 Correct 375 ms 27984 KB Output is correct
28 Correct 391 ms 26992 KB Output is correct
29 Correct 321 ms 24268 KB Output is correct
30 Correct 354 ms 26964 KB Output is correct
31 Correct 301 ms 23964 KB Output is correct
32 Correct 341 ms 23588 KB Output is correct
33 Correct 496 ms 27032 KB Output is correct
34 Correct 382 ms 24132 KB Output is correct
35 Correct 464 ms 27504 KB Output is correct
36 Correct 50 ms 9420 KB Output is correct
37 Correct 372 ms 27180 KB Output is correct
38 Correct 289 ms 22248 KB Output is correct
39 Correct 107 ms 12816 KB Output is correct
40 Correct 172 ms 13008 KB Output is correct
41 Correct 101 ms 10388 KB Output is correct
42 Correct 90 ms 10008 KB Output is correct
43 Correct 124 ms 9888 KB Output is correct
44 Correct 75 ms 9604 KB Output is correct
45 Correct 83 ms 10088 KB Output is correct
46 Correct 76 ms 9548 KB Output is correct
47 Correct 92 ms 9920 KB Output is correct
48 Correct 76 ms 9596 KB Output is correct
49 Correct 85 ms 9840 KB Output is correct
50 Correct 78 ms 9448 KB Output is correct
51 Correct 72 ms 9644 KB Output is correct
52 Correct 64 ms 9436 KB Output is correct
53 Correct 68 ms 9292 KB Output is correct
54 Correct 69 ms 9556 KB Output is correct
55 Correct 62 ms 9312 KB Output is correct
56 Correct 36 ms 7380 KB Output is correct
57 Correct 73 ms 9048 KB Output is correct
58 Correct 71 ms 8380 KB Output is correct
59 Correct 20 ms 5076 KB Output is correct
60 Correct 19 ms 5084 KB Output is correct
61 Correct 756 ms 35032 KB Output is correct
62 Correct 605 ms 33764 KB Output is correct
63 Correct 677 ms 32888 KB Output is correct
64 Correct 570 ms 32668 KB Output is correct
65 Correct 643 ms 33932 KB Output is correct
66 Correct 521 ms 32624 KB Output is correct
67 Correct 449 ms 32032 KB Output is correct
68 Correct 489 ms 30872 KB Output is correct
69 Correct 472 ms 33008 KB Output is correct
70 Correct 408 ms 29740 KB Output is correct
71 Correct 357 ms 31764 KB Output is correct
72 Correct 395 ms 30184 KB Output is correct
73 Correct 425 ms 31236 KB Output is correct
74 Correct 377 ms 32456 KB Output is correct
75 Correct 407 ms 31212 KB Output is correct
76 Correct 39 ms 9476 KB Output is correct
77 Correct 407 ms 27220 KB Output is correct
78 Correct 323 ms 25824 KB Output is correct
79 Correct 18 ms 5076 KB Output is correct
80 Correct 19 ms 5076 KB Output is correct