제출 #892261

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
892261	2023-12-25 06:13:52	tch1cherin	가로등 (APIO19_street_lamps)	C++17	100 / 100	1835 ms	109496 KiB

street_lamps

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#include <bits/stdc++.h>
using namespace std;
struct fenwick {
  int size;
  vector<int> tree;
  int sum;
  vector<int> updates;
  fenwick() {}
  fenwick(int n) : size(n), tree(n + 1), sum(0) {}
  void update(int i, int v) {
    sum += v;
    for (i++; i <= size; i += i & -i) {
      updates.push_back(i);
      tree[i] += v;
    }
  }
  int prefix_query(int r) {
    int ans = 0;
    for (; r > 0; r -= r & -r) {
      ans += tree[r];
    }
    return ans;
  }
  int suffix_query(int l) {
 
 
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• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20