oj.uz

Submission #1030024

# Submission time Handle Problem Language Result Execution time Memory
1030024 2024-07-21T16:22:48 Z mispertion Abracadabra (CEOI22_abracadabra) C++17
100 / 100
 787 ms 73348 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("O3")

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
typedef long long ll;
#define int ll
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
 
#define pb push_back
#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
#define mispertion ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0)
#define F first
#define S second
#define getlast(s) (*s.rbegin())
#define debg cout << "OK\n"
 
const ld PI = 3.1415926535;
const int N = 2e5+10;
const int M = 1e4 + 5;
int mod = 1e9+7;
const int infi = INT_MAX;
const ll infl = LLONG_MAX;
const int P = 467743;
 
int mult(int a, int b) {
    return a * 1LL * b % mod;
}
 
int sum(int a, int b) {
    a %= mod;
    b %= mod; 
    if(a + b >= mod)
        return a + b - mod;
    if(a + b < 0)
        return a + b + mod;
    return a + b;
}
 
int binpow(int a, ll n) {
    if (n == 0)
        return 1;
    if (n % 2 == 1) {
        return mult(binpow(a, n - 1), a);
    } else {
        int b = binpow(a, n / 2);
        return mult(b, b);
    }
}

struct fenwick{
    int bt[N];
    
    void add(int i, int x){
        for(; i < N; i = (i | (i + 1)))
            bt[i] += x;
    }

    int get(int r){
        int ret = 0;
        for(; r >= 0; r = (r & (r + 1)) - 1)
            ret += bt[r];
        return ret;
    }

    int get(int l, int r){
        return get(r) - get(l - 1);
    }
} f;

int n, q, a[N], nxt[N], csz, ans[1000005];
set<pair<int, pii>> st;
pii otr[N];
vector<pii> que[N];

void shuffle(){
    while(sz(st) > 0 && csz - (st.rbegin()->S.S - st.rbegin()->S.F + 1) >= n / 2){
        csz -= (st.rbegin()->S.S - st.rbegin()->S.F + 1);
        st.erase(*st.rbegin());
    }
    if(csz == n / 2)
        return;
    pair<int, pii> pr = *st.rbegin();
    f.add(pr.F, -(pr.S.S - pr.S.F + 1));
    st.erase(pr);
    int nd = n / 2 - (csz - (pr.S.S - pr.S.F + 1));
    f.add(pr.F, nd);
    otr[pr.F] = {pr.S.F, pr.S.F + nd - 1};
    st.insert({pr.F, {pr.S.F, pr.S.F + nd - 1}});
    int nl = pr.S.F + nd, nr = pr.S.S;
    while(nl <= nr){
        int r = nxt[nl];
        f.add(a[nl], min(r - 1, nr) - nl + 1);
        otr[a[nl]] = {nl, min(r - 1, nr)};
        st.insert({a[nl], {nl, min(r - 1, nr)}});
        nl = r;
    }
}

void solve(){
    cin >> n >> q;
    for(int i = 1; i <= n; i++)
        cin >> a[i];
    for(int i = 1; i <= q; i++){
        int t, ps;
        cin >> t >> ps;
        t = min(t, n);
        que[t].pb({ps, i});
    }
    a[n + 1] = n + 1;
    for(int i = n; i >= 1; i--){
        nxt[i] = i + 1;
        while(a[i] > a[nxt[i]]){
            nxt[i] = nxt[nxt[i]];
        }
    }
    csz = n;
    int i = 1;
    while(i <= n){
        st.insert({a[i], {i, nxt[i] - 1}});
        f.add(a[i], nxt[i] - i);
        otr[a[i]] = {i, nxt[i] - 1};
        i = nxt[i];
    }
    for(int i = 0; i <= n; i++){
        for(auto qu : que[i]){
            int ps = qu.F;
            int lo = 0, hi = n + 1;
            while(lo + 1 < hi){
                int m = (lo + hi) / 2;
                if(f.get(m) < ps)
                    lo = m;
                else
                    hi = m;
            }
            int ha = ps - f.get(hi - 1);
            ans[qu.S] = a[otr[hi].F + ha - 1];
        }
        shuffle();
    }
    for(int i = 1; i <= q; i++)
        cout << ans[i] << '\n';
}

signed main() {
    mispertion;
    int t = 1;
    //cin >> t;
    while(t--){
        solve();
    }
    return 0;
}

// coded by mispertion :)

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 194 ms 36560 KB Output is correct
2 Correct 251 ms 42024 KB Output is correct
3 Correct 215 ms 43056 KB Output is correct
4 Correct 219 ms 39964 KB Output is correct
5 Correct 274 ms 46288 KB Output is correct
6 Correct 241 ms 43688 KB Output is correct
7 Correct 237 ms 48592 KB Output is correct
8 Correct 231 ms 41916 KB Output is correct
9 Correct 217 ms 40968 KB Output is correct
10 Correct 236 ms 41220 KB Output is correct
11 Correct 229 ms 41032 KB Output is correct
12 Correct 239 ms 38472 KB Output is correct
13 Correct 231 ms 39672 KB Output is correct
14 Correct 237 ms 43776 KB Output is correct
15 Correct 234 ms 40780 KB Output is correct
16 Correct 3 ms 7256 KB Output is correct
17 Correct 270 ms 38972 KB Output is correct
18 Correct 194 ms 38664 KB Output is correct
19 Correct 2 ms 7224 KB Output is correct
20 Correct 2 ms 7256 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 426 ms 49056 KB Output is correct
2 Correct 415 ms 65660 KB Output is correct
3 Correct 401 ms 52892 KB Output is correct
4 Correct 402 ms 50024 KB Output is correct
5 Correct 340 ms 51332 KB Output is correct
6 Correct 373 ms 49256 KB Output is correct
7 Correct 387 ms 57760 KB Output is correct
8 Correct 378 ms 56296 KB Output is correct
9 Correct 363 ms 50360 KB Output is correct
10 Correct 361 ms 53280 KB Output is correct
11 Correct 284 ms 44956 KB Output is correct
12 Correct 313 ms 46016 KB Output is correct
13 Correct 354 ms 52352 KB Output is correct
14 Correct 274 ms 46972 KB Output is correct
15 Correct 394 ms 54348 KB Output is correct
16 Correct 17 ms 13148 KB Output is correct
17 Correct 393 ms 62576 KB Output is correct
18 Correct 326 ms 38924 KB Output is correct
19 Correct 114 ms 20052 KB Output is correct
20 Correct 107 ms 22772 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 96 ms 16208 KB Output is correct
2 Correct 89 ms 17488 KB Output is correct
3 Correct 112 ms 15700 KB Output is correct
4 Correct 63 ms 13140 KB Output is correct
5 Correct 70 ms 15700 KB Output is correct
6 Correct 60 ms 13400 KB Output is correct
7 Correct 62 ms 14932 KB Output is correct
8 Correct 58 ms 13900 KB Output is correct
9 Correct 83 ms 14964 KB Output is correct
10 Correct 41 ms 12372 KB Output is correct
11 Correct 48 ms 12988 KB Output is correct
12 Correct 50 ms 12612 KB Output is correct
13 Correct 56 ms 12368 KB Output is correct
14 Correct 39 ms 12884 KB Output is correct
15 Correct 40 ms 11936 KB Output is correct
16 Correct 13 ms 9308 KB Output is correct
17 Correct 85 ms 17820 KB Output is correct
18 Correct 42 ms 9648 KB Output is correct
19 Correct 2 ms 5212 KB Output is correct
20 Correct 2 ms 5212 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 194 ms 36560 KB Output is correct
2 Correct 251 ms 42024 KB Output is correct
3 Correct 215 ms 43056 KB Output is correct
4 Correct 219 ms 39964 KB Output is correct
5 Correct 274 ms 46288 KB Output is correct
6 Correct 241 ms 43688 KB Output is correct
7 Correct 237 ms 48592 KB Output is correct
8 Correct 231 ms 41916 KB Output is correct
9 Correct 217 ms 40968 KB Output is correct
10 Correct 236 ms 41220 KB Output is correct
11 Correct 229 ms 41032 KB Output is correct
12 Correct 239 ms 38472 KB Output is correct
13 Correct 231 ms 39672 KB Output is correct
14 Correct 237 ms 43776 KB Output is correct
15 Correct 234 ms 40780 KB Output is correct
16 Correct 3 ms 7256 KB Output is correct
17 Correct 270 ms 38972 KB Output is correct
18 Correct 194 ms 38664 KB Output is correct
19 Correct 2 ms 7224 KB Output is correct
20 Correct 2 ms 7256 KB Output is correct
21 Correct 426 ms 49056 KB Output is correct
22 Correct 415 ms 65660 KB Output is correct
23 Correct 401 ms 52892 KB Output is correct
24 Correct 402 ms 50024 KB Output is correct
25 Correct 340 ms 51332 KB Output is correct
26 Correct 373 ms 49256 KB Output is correct
27 Correct 387 ms 57760 KB Output is correct
28 Correct 378 ms 56296 KB Output is correct
29 Correct 363 ms 50360 KB Output is correct
30 Correct 361 ms 53280 KB Output is correct
31 Correct 284 ms 44956 KB Output is correct
32 Correct 313 ms 46016 KB Output is correct
33 Correct 354 ms 52352 KB Output is correct
34 Correct 274 ms 46972 KB Output is correct
35 Correct 394 ms 54348 KB Output is correct
36 Correct 17 ms 13148 KB Output is correct
37 Correct 393 ms 62576 KB Output is correct
38 Correct 326 ms 38924 KB Output is correct
39 Correct 114 ms 20052 KB Output is correct
40 Correct 107 ms 22772 KB Output is correct
41 Correct 96 ms 16208 KB Output is correct
42 Correct 89 ms 17488 KB Output is correct
43 Correct 112 ms 15700 KB Output is correct
44 Correct 63 ms 13140 KB Output is correct
45 Correct 70 ms 15700 KB Output is correct
46 Correct 60 ms 13400 KB Output is correct
47 Correct 62 ms 14932 KB Output is correct
48 Correct 58 ms 13900 KB Output is correct
49 Correct 83 ms 14964 KB Output is correct
50 Correct 41 ms 12372 KB Output is correct
51 Correct 48 ms 12988 KB Output is correct
52 Correct 50 ms 12612 KB Output is correct
53 Correct 56 ms 12368 KB Output is correct
54 Correct 39 ms 12884 KB Output is correct
55 Correct 40 ms 11936 KB Output is correct
56 Correct 13 ms 9308 KB Output is correct
57 Correct 85 ms 17820 KB Output is correct
58 Correct 42 ms 9648 KB Output is correct
59 Correct 2 ms 5212 KB Output is correct
60 Correct 2 ms 5212 KB Output is correct
61 Correct 787 ms 71836 KB Output is correct
62 Correct 678 ms 73348 KB Output is correct
63 Correct 752 ms 67996 KB Output is correct
64 Correct 579 ms 64928 KB Output is correct
65 Correct 560 ms 67532 KB Output is correct
66 Correct 612 ms 64840 KB Output is correct
67 Correct 448 ms 63392 KB Output is correct
68 Correct 473 ms 61176 KB Output is correct
69 Correct 541 ms 65076 KB Output is correct
70 Correct 466 ms 58540 KB Output is correct
71 Correct 364 ms 60364 KB Output is correct
72 Correct 467 ms 59496 KB Output is correct
73 Correct 424 ms 60368 KB Output is correct
74 Correct 405 ms 64020 KB Output is correct
75 Correct 463 ms 60124 KB Output is correct
76 Correct 22 ms 15696 KB Output is correct
77 Correct 686 ms 62956 KB Output is correct
78 Correct 468 ms 49596 KB Output is correct
79 Correct 2 ms 12888 KB Output is correct
80 Correct 2 ms 12892 KB Output is correct