oj.uz

Submission #942592

# Submission time Handle Problem Language Result Execution time Memory
942592 2024-03-11T00:26:53 Z LOLOLO Index (COCI21_index) C++17
110 / 110
 1296 ms 141448 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

#define           f     first
#define           s     second
#define           pb    push_back
#define           ep    emplace
#define           eb    emplace_back
#define           lb    lower_bound
#define           ub    upper_bound
#define       all(x)    x.begin(), x.end()
#define      rall(x)    x.rbegin(), x.rend()
#define   uniquev(v)    sort(all(v)), (v).resize(unique(all(v)) - (v).begin())
#define     mem(f,x)    memset(f , x , sizeof(f))
#define        sz(x)    (int)(x).size()
#define  __lcm(a, b)    (1ll * ((a) / __gcd((a), (b))) * (b))
#define          mxx    *max_element
#define          mnn    *min_element
#define    cntbit(x)    __builtin_popcountll(x)
#define       len(x)    (int)(x.length())

const int N = 1e6 + 100;
const int lim = 2e5 + 100;

struct node{
    ll s = 0;
    node * l, *r;
    node() {};
    node(node *L, node *R, ll v) {
        l = L;
        r = R;
        s = v;
    }    
};

node *seg[N];

void build(node *root, int l, int r) {
    if (l == r) {
        return;
    }

    int m = (l + r) / 2;
    root -> l = new node(NULL, NULL, 0);
    root -> r = new node(NULL, NULL, 0);
    build(root -> l, l, m);
    build(root -> r, m + 1, r);
}

void upd(node *pr, node *cur, int l, int r, int v) {
    if (l > v || r < v)
        return;

    if (l == r) {
        return;
    }

    int m = (l + r) / 2;
    if (v <= m) {
        cur -> r = pr -> r;
        cur -> l = new node(NULL, NULL, pr -> l -> s + 1);
        upd(pr -> l, cur -> l, l, m, v);
    } else {
        cur -> l = pr -> l;
        cur -> r = new node(NULL, NULL, pr -> r -> s + 1);
        upd(pr -> r, cur -> r, m + 1, r, v);
    }
}

ll get(node *root, int l, int r, int u, int v) {
    if (l > v || r < u)
        return 0;

    if (l >= u && r <= v) {
        return root -> s;
    }

    int m = (l + r) / 2;
    return get(root -> l, l, m, u, v) + get(root -> r, m + 1, r, u, v);
}

ll a[N];


ll solve() {
    int n, q;
    cin >> n >> q;

    seg[0] = new node(NULL, NULL, 0);
    build(seg[0], 1, lim);

    for (int i = 1; i <= n; i++) {
        cin >> a[i];
        seg[i] = new node(NULL, NULL, seg[i - 1] -> s + 1);
        upd(seg[i - 1], seg[i], 1, lim, a[i]);
    }

    while (q--) {
        int u, v;
        cin >> u >> v;
        int l = 1, r = lim, ans = 0;

        while (l <= r) {
            int m = (l + r) / 2;
            if (get(seg[v], 1, lim, m, lim) - get(seg[u - 1], 1, lim, m, lim) >= m) {
                ans = m;
                l = m + 1;
            } else {
                r = m - 1;
            }
        }

        cout << ans << '\n';
    }

    return 0;
}

int main() { 
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);

    int t = 1;
    //cin >> t;

    while (t--) {
        solve();
        //cout << solve() << '\n';
    }
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 15452 KB Output is correct
2 Correct 14 ms 15452 KB Output is correct
3 Correct 15 ms 15452 KB Output is correct
4 Correct 14 ms 15452 KB Output is correct
5 Correct 15 ms 15704 KB Output is correct
6 Correct 15 ms 15596 KB Output is correct
7 Correct 15 ms 15452 KB Output is correct
8 Correct 15 ms 15448 KB Output is correct
9 Correct 15 ms 15452 KB Output is correct
10 Correct 15 ms 15584 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 15452 KB Output is correct
2 Correct 14 ms 15452 KB Output is correct
3 Correct 15 ms 15452 KB Output is correct
4 Correct 14 ms 15452 KB Output is correct
5 Correct 15 ms 15704 KB Output is correct
6 Correct 15 ms 15596 KB Output is correct
7 Correct 15 ms 15452 KB Output is correct
8 Correct 15 ms 15448 KB Output is correct
9 Correct 15 ms 15452 KB Output is correct
10 Correct 15 ms 15584 KB Output is correct
11 Correct 232 ms 46680 KB Output is correct
12 Correct 227 ms 46816 KB Output is correct
13 Correct 225 ms 46672 KB Output is correct
14 Correct 219 ms 46676 KB Output is correct
15 Correct 219 ms 46672 KB Output is correct
16 Correct 238 ms 46952 KB Output is correct
17 Correct 228 ms 46752 KB Output is correct
18 Correct 221 ms 46732 KB Output is correct
19 Correct 234 ms 46816 KB Output is correct
20 Correct 227 ms 46672 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 15452 KB Output is correct
2 Correct 14 ms 15452 KB Output is correct
3 Correct 15 ms 15452 KB Output is correct
4 Correct 14 ms 15452 KB Output is correct
5 Correct 15 ms 15704 KB Output is correct
6 Correct 15 ms 15596 KB Output is correct
7 Correct 15 ms 15452 KB Output is correct
8 Correct 15 ms 15448 KB Output is correct
9 Correct 15 ms 15452 KB Output is correct
10 Correct 15 ms 15584 KB Output is correct
11 Correct 232 ms 46680 KB Output is correct
12 Correct 227 ms 46816 KB Output is correct
13 Correct 225 ms 46672 KB Output is correct
14 Correct 219 ms 46676 KB Output is correct
15 Correct 219 ms 46672 KB Output is correct
16 Correct 238 ms 46952 KB Output is correct
17 Correct 228 ms 46752 KB Output is correct
18 Correct 221 ms 46732 KB Output is correct
19 Correct 234 ms 46816 KB Output is correct
20 Correct 227 ms 46672 KB Output is correct
21 Correct 1263 ms 137892 KB Output is correct
22 Correct 1265 ms 141136 KB Output is correct
23 Correct 1272 ms 141020 KB Output is correct
24 Correct 1296 ms 141324 KB Output is correct
25 Correct 1257 ms 141140 KB Output is correct
26 Correct 1257 ms 141448 KB Output is correct
27 Correct 1256 ms 141152 KB Output is correct
28 Correct 1254 ms 141136 KB Output is correct
29 Correct 1263 ms 141152 KB Output is correct
30 Correct 1260 ms 141424 KB Output is correct