oj.uz

Submission #942566

# Submission time Handle Problem Language Result Execution time Memory
942566 2024-03-10T21:31:53 Z vjudge1 Index (COCI21_index) C++17
60 / 110
 671 ms 65900 KB 
#include <bits/stdc++.h>

using namespace std;

using ld = long double;
using ll = long long;

#define int ll

#define sz(x) (int)x.size()

const int N = 2e5+5;
int n, q;
int p[N];

vector<int> T[2*N];

void init(int i, int tl, int tr){
    if(tl == tr){
        T[i].push_back(p[tl]);
        return;
    }

    int m = (tl + tr) / 2;

    init(2*i+1, tl, m);
    init(2*i+2, m+1, tr);

    merge(T[2*i+1].begin(), T[2*i+1].end(), T[2*i+2].begin(), T[2*i+2].end(), back_inserter(T[i]));

}

int query(int l, int r, int k, int i, int tl, int tr){
    if(r < tl or l > tr){
        return 0;
    }
    if(l <= tl && tr <= r){
        return lower_bound(T[i].begin(), T[i].end(), k) - T[i].begin();
    }
    int m = (tl + tr) / 2;
    return query(l, r, k, 2*i+1, tl, m) + query(l, r, k, 2*i+2, m+1, tr);
}

int query(int l, int r, int k){
    return query(l, r, k, 0, 0, n-1);
}

signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin >> n >> q;
    for(int i=0; i<n; ++i){
        cin >> p[i];
    }

    init(0, 0, n-1);

    while(q--){
        int l, r;
        cin >> l >> r;
        l--, r--;

        int low = 1, high = r - l + 1;
        int res = 1;
        while(low <= high){
            int mid = (low + high) / 2;

            int tmp = r - l + 1 - query(l, r, mid);

            if(tmp >= mid){
                res = mid;
                low = mid+1;
            } else {
                high = mid-1;
            }

        }

        cout << res << endl;


    }

}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 10844 KB Output is correct
2 Correct 6 ms 10816 KB Output is correct
3 Correct 7 ms 10844 KB Output is correct
4 Correct 6 ms 10908 KB Output is correct
5 Correct 6 ms 10840 KB Output is correct
6 Correct 6 ms 10844 KB Output is correct
7 Correct 6 ms 10844 KB Output is correct
8 Correct 6 ms 10840 KB Output is correct
9 Correct 6 ms 10844 KB Output is correct
10 Correct 6 ms 10844 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 10844 KB Output is correct
2 Correct 6 ms 10816 KB Output is correct
3 Correct 7 ms 10844 KB Output is correct
4 Correct 6 ms 10908 KB Output is correct
5 Correct 6 ms 10840 KB Output is correct
6 Correct 6 ms 10844 KB Output is correct
7 Correct 6 ms 10844 KB Output is correct
8 Correct 6 ms 10840 KB Output is correct
9 Correct 6 ms 10844 KB Output is correct
10 Correct 6 ms 10844 KB Output is correct
11 Correct 642 ms 21488 KB Output is correct
12 Correct 631 ms 21216 KB Output is correct
13 Correct 636 ms 21236 KB Output is correct
14 Correct 653 ms 21196 KB Output is correct
15 Correct 628 ms 21704 KB Output is correct
16 Correct 643 ms 21520 KB Output is correct
17 Correct 630 ms 21192 KB Output is correct
18 Correct 622 ms 21096 KB Output is correct
19 Correct 671 ms 21312 KB Output is correct
20 Correct 639 ms 21268 KB Output is correct

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 10844 KB Output is correct
2 Correct 6 ms 10816 KB Output is correct
3 Correct 7 ms 10844 KB Output is correct
4 Correct 6 ms 10908 KB Output is correct
5 Correct 6 ms 10840 KB Output is correct
6 Correct 6 ms 10844 KB Output is correct
7 Correct 6 ms 10844 KB Output is correct
8 Correct 6 ms 10840 KB Output is correct
9 Correct 6 ms 10844 KB Output is correct
10 Correct 6 ms 10844 KB Output is correct
11 Correct 642 ms 21488 KB Output is correct
12 Correct 631 ms 21216 KB Output is correct
13 Correct 636 ms 21236 KB Output is correct
14 Correct 653 ms 21196 KB Output is correct
15 Correct 628 ms 21704 KB Output is correct
16 Correct 643 ms 21520 KB Output is correct
17 Correct 630 ms 21192 KB Output is correct
18 Correct 622 ms 21096 KB Output is correct
19 Correct 671 ms 21312 KB Output is correct
20 Correct 639 ms 21268 KB Output is correct
21 Runtime error 73 ms 65900 KB Execution killed with signal 11
22 Halted 0 ms 0 KB -