Submission #862897

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
862897	2023-10-19 10:18:50	Trisanu_Das	Abracadabra (CEOI22_abracadabra)	C++17	100 / 100	545 ms	48192 KiB

Main

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#include <bits/stdc++.h>
using namespace std;
using VI = vector<int>;
struct BIT {
  VI C;
  int n;
  BIT(int _n) : C(_n + 1), n(_n + 1) {}
  void add(int x, int v) {
    while (x < n) C[x] += v, x += x & -x;
  }
  int sum(int x) {
    int ret = 0;
    while (x) ret += C[x], x -= x & -x;
    return ret;
  }
  int kth(int x) {
    int pos = 0;
    for (int b = 1 << 17; b >= 1; b >>= 1)
      if (pos + b < n && C[pos + b] < x) pos += b, x -= C[pos];
    return pos + 1;
  }
};
int main() {
  ios::sync_with_stdio(false), cin.tie(0);
  int N, q;
  cin >> N >> q;
  BIT S(N);
  VI A(N), P(N + 1), Ans(q);
  vector<vector<pair<int, int>>> v(N + 1);
  for (int i = 0; i < N; i++) cin >> A[i], P[A[i]] = i;
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 40 / 40
• Subtask 3: 25 / 25
• Subtask 4: 25 / 25