oj.uz

Submission #632115

# Submission time Handle Problem Language Result Execution time Memory
632115 2022-08-19T12:49:12 Z arayi Abracadabra (CEOI22_abracadabra) C++17
100 / 100
 664 ms 40652 KB 
// Arayi
#include <bits/stdc++.h>
#define fr first
#define sc second
#define MP make_pair
#define ad push_back
#define PB push_back
#define fastio                        \
    ios_base::sync_with_stdio(false); \
    cin.tie(0);                       \
    cout.tie(0);
#define lli long long int
#define y1 arayikhalatyan
#define j1 jigglypuff
#define ld long double
#define itn int
#define pir pair<int, int>
#define all(x) (x).begin(), (x).end()
#define str string
#define enl endl
#define en endl
#define cd complex<long double>
#define vcd vector<cd>
#define vii vector<int>
#define vlli vector<lli>
using namespace std;

lli gcd(lli a, lli b) { return (b == 0LL ? a : gcd(b, a % b)); }
ld dist(ld x, ld y1, ld x2, ld y2)
{
    return sqrt((x - x2) * (x - x2) + (y1 - y2) * (y1 - y2));
}
lli S(lli a)
{
    return (a * (a + 1LL)) / 2;
}
mt19937 rnd(363542);
char vow[] = {'a', 'e', 'i', 'o', 'u'};
int dx[] = {0, -1, 0, 1, -1, -1, 1, 1, 0};
int dy[] = {-1, 0, 1, 0, -1, 1, -1, 1, 0};
char dc[] = {'R', 'D', 'L', 'U'};

const int N = 1e6 + 20;
const lli mod = 1e9 + 7;
const ld pi = acos(-1);
const ld e = 1e-13;
const int T = 200;

lli bp(lli a, lli b = mod - 2LL)
{
    lli ret = 1;
    while (b)
    {
        if (b & 1)
            ret *= a, ret %= mod;
        a *= a;
        a %= mod;
        b >>= 1;
    }
    return ret;
}
ostream &operator<<(ostream &c, pir a)
{
    c << a.fr << " " << a.sc;
    return c;
}
template <class T>
void maxi(T &a, T b)
{
    a = max(a, b);
}
template <class T>
void mini(T &a, T b)
{
    a = min(a, b);
}

int n, q;
int a[N], ind[N], hj[N], pat[N];
pair<pir, int> b[N];
int t[4 * N];
void upd(int q, int v, int l = 0, int r = n, int nd = 1)
{
    if (q > r || q < l)
        return;
    if (l == r)
    {
        t[nd] += v;
        return;
    }
    int md = (l + r) / 2;
    upd(q, v, l, md, nd * 2);
    upd(q, v, md + 1, r, nd * 2 + 1);
    t[nd] = t[nd * 2] + t[nd * 2 + 1];
}
int qry(int l, int r, int nl = 0, int nr = n, int nd = 1)
{
    if (l > nr || r < nl)
        return 0;
    if (nl == l && r == nr)
        return t[nd];
    int md = (nl + nr) / 2;
    return qry(l, min(md, r), nl, md, nd * 2) + qry(max(md + 1, l), r, md + 1, nr, nd * 2 + 1);
}
int qr(int v, int nl = 0, int nr = n, int nd = 1)
{
    if (nl == nr)
        return nl;
    int md = (nl + nr) / 2;
    if (t[nd * 2] > v)
        return qr(v, nl, md, nd * 2);
    else
        return qr(v - t[nd * 2], md + 1, nr, nd * 2 + 1);
}
int main()
{
    fastio;
    cin >> n >> q;
    for (int i = 0; i < n; i++)
    {
        cin >> a[i];
        ind[a[i]] = i;
    }
    for (int i = 0; i < q; i++)
    {
        cin >> b[i].fr.fr >> b[i].fr.sc;
        b[i].fr.sc--;
        b[i].sc = i;
    }
    sort(b, b + q);
    stack<pair<int, int>> st;
    st.push(MP(mod, n));
    for (int i = n - 1; i >= 0; i--)
    {
        while (a[i] > st.top().fr)
            st.pop();
        hj[i] = st.top().sc;
        st.push(MP(a[i], i));
    }
    int i1 = 0;
    while (i1 < n)
    {
        if (i1 < n / 2 && hj[i1] >= n / 2)
        {
            upd(a[i1], n / 2 - i1);
            // cout << a[i1] << " " << n / 2 - i1 << endl;
            i1 = n / 2;
        }
        else
        {
            upd(a[i1], hj[i1] - i1);
            // cout << a[i1] << " " << hj[i1] - i1 << endl;
            i1 = hj[i1];
        }
    }
    i1 = 0;
    int t1 = 0;
    while (i1 < q && b[i1].fr.fr == t1)
    {
        pat[b[i1].sc] = a[b[i1].fr.sc];
        i1++;
    }
    t1++;
    while (i1 < q)
    {
        while (i1 < q && b[i1].fr.fr == t1)
        {
            int ans = qr(b[i1].fr.sc);
            // cout << b[i1].fr.sc << " " << ans << endl;
            int sm = b[i1].fr.sc - qry(0, ans - 1);
            pat[b[i1].sc] = a[ind[ans] + sm];
            i1++;
        }
        int ans = qr(n / 2);
        if (qry(0, ans - 1) == n / 2)
        {
            while (i1 < q)
            {
                int ans = qr(b[i1].fr.sc);
                // cout << b[i1].fr.sc << " " << ans << endl;
                int sm = b[i1].fr.sc - qry(0, ans - 1);
                pat[b[i1].sc] = a[ind[ans] + sm];
                i1++;
            }
        }
        else
        {
            int sm = n / 2 - qry(0, ans - 1);
            int qn = qry(ans, ans);
            upd(ans, sm - qn);
            int i1 = ind[ans] + sm;
            while (i1 < ind[ans] + qn)
            {
                upd(a[i1], min(hj[i1], ind[ans] + qn) - i1);
                i1 = hj[i1];
            }
        }
        t1++;
    }
    for (int i = 0; i < q; i++)
        cout << pat[i] << "\n";
    return 0;
}

/*
    __
  *(><)*
    \/ /
    ||/
  --||
    ||
    /\
   /  \
  /    \

*/

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 444 ms 20432 KB Output is correct
2 Correct 397 ms 22600 KB Output is correct
3 Correct 379 ms 22548 KB Output is correct
4 Correct 386 ms 25096 KB Output is correct
5 Correct 393 ms 25604 KB Output is correct
6 Correct 377 ms 24304 KB Output is correct
7 Correct 389 ms 24236 KB Output is correct
8 Correct 381 ms 23604 KB Output is correct
9 Correct 389 ms 24000 KB Output is correct
10 Correct 401 ms 23600 KB Output is correct
11 Correct 385 ms 23600 KB Output is correct
12 Correct 367 ms 22608 KB Output is correct
13 Correct 399 ms 23220 KB Output is correct
14 Correct 392 ms 25776 KB Output is correct
15 Correct 401 ms 25944 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 327 ms 24668 KB Output is correct
18 Correct 357 ms 24416 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 328 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 530 ms 40208 KB Output is correct
2 Correct 496 ms 40652 KB Output is correct
3 Correct 424 ms 32552 KB Output is correct
4 Correct 472 ms 29576 KB Output is correct
5 Correct 442 ms 29400 KB Output is correct
6 Correct 395 ms 31368 KB Output is correct
7 Correct 456 ms 33532 KB Output is correct
8 Correct 474 ms 35996 KB Output is correct
9 Correct 423 ms 29496 KB Output is correct
10 Correct 419 ms 33828 KB Output is correct
11 Correct 366 ms 27476 KB Output is correct
12 Correct 364 ms 26244 KB Output is correct
13 Correct 417 ms 33856 KB Output is correct
14 Correct 383 ms 31900 KB Output is correct
15 Correct 423 ms 37512 KB Output is correct
16 Correct 21 ms 5068 KB Output is correct
17 Correct 311 ms 33576 KB Output is correct
18 Correct 338 ms 24004 KB Output is correct
19 Correct 67 ms 9004 KB Output is correct
20 Correct 131 ms 11464 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 102 ms 6392 KB Output is correct
2 Correct 85 ms 6380 KB Output is correct
3 Correct 92 ms 6336 KB Output is correct
4 Correct 61 ms 5872 KB Output is correct
5 Correct 88 ms 5032 KB Output is correct
6 Correct 68 ms 6020 KB Output is correct
7 Correct 74 ms 5120 KB Output is correct
8 Correct 64 ms 5480 KB Output is correct
9 Correct 75 ms 5956 KB Output is correct
10 Correct 61 ms 5892 KB Output is correct
11 Correct 61 ms 5096 KB Output is correct
12 Correct 53 ms 5784 KB Output is correct
13 Correct 56 ms 5852 KB Output is correct
14 Correct 56 ms 6008 KB Output is correct
15 Correct 55 ms 5224 KB Output is correct
16 Correct 12 ms 2628 KB Output is correct
17 Correct 51 ms 6236 KB Output is correct
18 Correct 44 ms 4428 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 444 ms 20432 KB Output is correct
2 Correct 397 ms 22600 KB Output is correct
3 Correct 379 ms 22548 KB Output is correct
4 Correct 386 ms 25096 KB Output is correct
5 Correct 393 ms 25604 KB Output is correct
6 Correct 377 ms 24304 KB Output is correct
7 Correct 389 ms 24236 KB Output is correct
8 Correct 381 ms 23604 KB Output is correct
9 Correct 389 ms 24000 KB Output is correct
10 Correct 401 ms 23600 KB Output is correct
11 Correct 385 ms 23600 KB Output is correct
12 Correct 367 ms 22608 KB Output is correct
13 Correct 399 ms 23220 KB Output is correct
14 Correct 392 ms 25776 KB Output is correct
15 Correct 401 ms 25944 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 327 ms 24668 KB Output is correct
18 Correct 357 ms 24416 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 328 KB Output is correct
21 Correct 530 ms 40208 KB Output is correct
22 Correct 496 ms 40652 KB Output is correct
23 Correct 424 ms 32552 KB Output is correct
24 Correct 472 ms 29576 KB Output is correct
25 Correct 442 ms 29400 KB Output is correct
26 Correct 395 ms 31368 KB Output is correct
27 Correct 456 ms 33532 KB Output is correct
28 Correct 474 ms 35996 KB Output is correct
29 Correct 423 ms 29496 KB Output is correct
30 Correct 419 ms 33828 KB Output is correct
31 Correct 366 ms 27476 KB Output is correct
32 Correct 364 ms 26244 KB Output is correct
33 Correct 417 ms 33856 KB Output is correct
34 Correct 383 ms 31900 KB Output is correct
35 Correct 423 ms 37512 KB Output is correct
36 Correct 21 ms 5068 KB Output is correct
37 Correct 311 ms 33576 KB Output is correct
38 Correct 338 ms 24004 KB Output is correct
39 Correct 67 ms 9004 KB Output is correct
40 Correct 131 ms 11464 KB Output is correct
41 Correct 102 ms 6392 KB Output is correct
42 Correct 85 ms 6380 KB Output is correct
43 Correct 92 ms 6336 KB Output is correct
44 Correct 61 ms 5872 KB Output is correct
45 Correct 88 ms 5032 KB Output is correct
46 Correct 68 ms 6020 KB Output is correct
47 Correct 74 ms 5120 KB Output is correct
48 Correct 64 ms 5480 KB Output is correct
49 Correct 75 ms 5956 KB Output is correct
50 Correct 61 ms 5892 KB Output is correct
51 Correct 61 ms 5096 KB Output is correct
52 Correct 53 ms 5784 KB Output is correct
53 Correct 56 ms 5852 KB Output is correct
54 Correct 56 ms 6008 KB Output is correct
55 Correct 55 ms 5224 KB Output is correct
56 Correct 12 ms 2628 KB Output is correct
57 Correct 51 ms 6236 KB Output is correct
58 Correct 44 ms 4428 KB Output is correct
59 Correct 0 ms 340 KB Output is correct
60 Correct 0 ms 340 KB Output is correct
61 Correct 664 ms 35948 KB Output is correct
62 Correct 646 ms 37748 KB Output is correct
63 Correct 650 ms 33356 KB Output is correct
64 Correct 556 ms 32864 KB Output is correct
65 Correct 576 ms 35948 KB Output is correct
66 Correct 554 ms 33664 KB Output is correct
67 Correct 539 ms 35192 KB Output is correct
68 Correct 551 ms 35036 KB Output is correct
69 Correct 542 ms 33188 KB Output is correct
70 Correct 545 ms 34648 KB Output is correct
71 Correct 531 ms 34068 KB Output is correct
72 Correct 543 ms 31740 KB Output is correct
73 Correct 526 ms 32828 KB Output is correct
74 Correct 606 ms 34148 KB Output is correct
75 Correct 554 ms 32740 KB Output is correct
76 Correct 23 ms 4200 KB Output is correct
77 Correct 400 ms 31872 KB Output is correct
78 Correct 436 ms 30092 KB Output is correct
79 Correct 1 ms 340 KB Output is correct
80 Correct 1 ms 340 KB Output is correct