oj.uz

Submission #968423

# Submission time Handle Problem Language Result Execution time Memory
968423 2024-04-23T12:10:17 Z VMaksimoski008 Index (COCI21_index) C++14
60 / 110
 2500 ms 8416 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;

int32_t main() {
    ios_base::sync_with_stdio(false);
    cout.tie(0); cin.tie(0);

    int n, q;
    cin >> n >> q;

    vector<int> v(n+1), L(q), R(q, 2e5), ANS(q, 1);
    for(int i=1; i<=n; i++) cin >> v[i];

    vector<pii> qus(q);
    for(pii &x : qus) cin >> x.first >> x.second;

    bool changed = 1;
    while(changed) {
        changed = 0;

        map<int, stack<int> > to_change;
        for(int i=0; i<q; i++)
            if(L[i] <= R[i]) to_change[(L[i] + R[i]) / 2].push(i);

        for(auto &[mid, st] : to_change) {
            vector<int> pref(n+1);
            for(int i=1; i<=n; i++) pref[i] = pref[i-1] + (v[i] >= mid);

            while(!st.empty()) {
                changed = 1;
                int id = st.top();
                st.pop();
                if(pref[qus[id].second] - pref[qus[id].first-1] >= mid) ANS[id] = mid, L[id] = mid + 1;
                else R[id] = mid - 1;
            }
        }
    }

    for(int &x : ANS) cout << x << '\n';
    return 0;
}

Compilation message

index.cpp: In function 'int32_t main()':
index.cpp:27:19: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   27 |         for(auto &[mid, st] : to_change) {
      |                   ^

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 384 ms 2752 KB Output is correct
12 Correct 377 ms 2772 KB Output is correct
13 Correct 384 ms 2704 KB Output is correct
14 Correct 376 ms 2700 KB Output is correct
15 Correct 380 ms 2768 KB Output is correct
16 Correct 380 ms 2748 KB Output is correct
17 Correct 384 ms 2764 KB Output is correct
18 Correct 388 ms 2700 KB Output is correct
19 Correct 384 ms 2956 KB Output is correct
20 Correct 383 ms 2700 KB Output is correct

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 384 ms 2752 KB Output is correct
12 Correct 377 ms 2772 KB Output is correct
13 Correct 384 ms 2704 KB Output is correct
14 Correct 376 ms 2700 KB Output is correct
15 Correct 380 ms 2768 KB Output is correct
16 Correct 380 ms 2748 KB Output is correct
17 Correct 384 ms 2764 KB Output is correct
18 Correct 388 ms 2700 KB Output is correct
19 Correct 384 ms 2956 KB Output is correct
20 Correct 383 ms 2700 KB Output is correct
21 Execution timed out 2566 ms 8416 KB Time limit exceeded
22 Halted 0 ms 0 KB -