| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 954090 |
2024-03-27T09:11:15 Z |
Beerus13 |
Index (COCI21_index) |
C++14 |
|
239 ms |
37536 KB |
#include<bits/stdc++.h>
using namespace std;
const int N = 2e5 + 5;
int n, q, a[N], ans[N];
int bit[N];
struct query {
int l, r, id;
};
vector<int> pos[N];
vector<query> queries;
void update(int i, int val) {
for(; i < N; i += i & -i) bit[i] += val;
}
int get(int i) {
int res = 0;
for(; i; i -= i & -i) res += bit[i];
return res;
}
int Sum(int l, int r) {
return get(r) - get(l - 1);
}
void solve(int l, int r, vector<query> &queries) {
if(queries.empty()) return;
if(l == r) {
for(auto it : queries) ans[it.id] = l;
return;
}
vector<query> L, R;
int mid = l + r >> 1;
for(int i = mid + 1; i <= r; ++i) {
for(int j : pos[i]) update(j, 1);
}
for(auto it : queries) {
if(Sum(it.l, it.r) > mid) R.push_back(it);
else L.push_back(it);
}
solve(l, mid, L);
for(int i = mid + 1; i <= r; ++i) {
for(int j : pos[i]) update(j, -1);
}
solve(mid + 1, r, R);
}
int main() {
ios::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
cin >> n >> q;
for(int i = 1; i <= n; ++i) {
cin >> a[i];
pos[a[i]].push_back(i);
}
for(int i = 1; i <= q; ++i) {
int l, r; cin >> l >> r;
queries.push_back({l, r, i});
}
solve(1, (int)2e5, queries);
for(int i = 1; i <= q; ++i) cout << ans[i] << '\n';
return 0;
}
// https://oj.vnoi.info/problem/coci2021_r6_index
Compilation message
index.cpp: In function 'void solve(int, int, std::vector<query>&)':
index.cpp:36:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
36 | int mid = l + r >> 1;
| ~~^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
7000 KB |
Output is correct |
| 2 |
Correct |
3 ms |
7000 KB |
Output is correct |
| 3 |
Correct |
4 ms |
7004 KB |
Output is correct |
| 4 |
Correct |
2 ms |
6804 KB |
Output is correct |
| 5 |
Correct |
3 ms |
7004 KB |
Output is correct |
| 6 |
Correct |
3 ms |
7004 KB |
Output is correct |
| 7 |
Correct |
3 ms |
7004 KB |
Output is correct |
| 8 |
Correct |
3 ms |
7004 KB |
Output is correct |
| 9 |
Correct |
3 ms |
6808 KB |
Output is correct |
| 10 |
Correct |
3 ms |
7000 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
7000 KB |
Output is correct |
| 2 |
Correct |
3 ms |
7000 KB |
Output is correct |
| 3 |
Correct |
4 ms |
7004 KB |
Output is correct |
| 4 |
Correct |
2 ms |
6804 KB |
Output is correct |
| 5 |
Correct |
3 ms |
7004 KB |
Output is correct |
| 6 |
Correct |
3 ms |
7004 KB |
Output is correct |
| 7 |
Correct |
3 ms |
7004 KB |
Output is correct |
| 8 |
Correct |
3 ms |
7004 KB |
Output is correct |
| 9 |
Correct |
3 ms |
6808 KB |
Output is correct |
| 10 |
Correct |
3 ms |
7000 KB |
Output is correct |
| 11 |
Correct |
54 ms |
14848 KB |
Output is correct |
| 12 |
Correct |
50 ms |
14676 KB |
Output is correct |
| 13 |
Correct |
53 ms |
14616 KB |
Output is correct |
| 14 |
Correct |
50 ms |
14640 KB |
Output is correct |
| 15 |
Correct |
50 ms |
14640 KB |
Output is correct |
| 16 |
Correct |
60 ms |
14744 KB |
Output is correct |
| 17 |
Correct |
51 ms |
14776 KB |
Output is correct |
| 18 |
Correct |
52 ms |
14792 KB |
Output is correct |
| 19 |
Correct |
50 ms |
14568 KB |
Output is correct |
| 20 |
Correct |
50 ms |
14556 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
7000 KB |
Output is correct |
| 2 |
Correct |
3 ms |
7000 KB |
Output is correct |
| 3 |
Correct |
4 ms |
7004 KB |
Output is correct |
| 4 |
Correct |
2 ms |
6804 KB |
Output is correct |
| 5 |
Correct |
3 ms |
7004 KB |
Output is correct |
| 6 |
Correct |
3 ms |
7004 KB |
Output is correct |
| 7 |
Correct |
3 ms |
7004 KB |
Output is correct |
| 8 |
Correct |
3 ms |
7004 KB |
Output is correct |
| 9 |
Correct |
3 ms |
6808 KB |
Output is correct |
| 10 |
Correct |
3 ms |
7000 KB |
Output is correct |
| 11 |
Correct |
54 ms |
14848 KB |
Output is correct |
| 12 |
Correct |
50 ms |
14676 KB |
Output is correct |
| 13 |
Correct |
53 ms |
14616 KB |
Output is correct |
| 14 |
Correct |
50 ms |
14640 KB |
Output is correct |
| 15 |
Correct |
50 ms |
14640 KB |
Output is correct |
| 16 |
Correct |
60 ms |
14744 KB |
Output is correct |
| 17 |
Correct |
51 ms |
14776 KB |
Output is correct |
| 18 |
Correct |
52 ms |
14792 KB |
Output is correct |
| 19 |
Correct |
50 ms |
14568 KB |
Output is correct |
| 20 |
Correct |
50 ms |
14556 KB |
Output is correct |
| 21 |
Correct |
219 ms |
35524 KB |
Output is correct |
| 22 |
Correct |
210 ms |
35532 KB |
Output is correct |
| 23 |
Correct |
208 ms |
35664 KB |
Output is correct |
| 24 |
Correct |
210 ms |
34508 KB |
Output is correct |
| 25 |
Correct |
239 ms |
37208 KB |
Output is correct |
| 26 |
Correct |
214 ms |
35136 KB |
Output is correct |
| 27 |
Correct |
236 ms |
35924 KB |
Output is correct |
| 28 |
Correct |
209 ms |
36272 KB |
Output is correct |
| 29 |
Correct |
217 ms |
35628 KB |
Output is correct |
| 30 |
Correct |
226 ms |
37536 KB |
Output is correct |
