Submission #521240

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
521240	2022-02-01 09:29:00	sidon	Street Lamps (APIO19_street_lamps)	C++17	100 / 100	1662 ms	115320 KiB

street_lamps

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#include <bits/stdc++.h>
using namespace std;
#define vi vector<int>
#define all(X) begin(X), end(X)
const int Z = 3e5+1;
 
struct CompoundBIT {
  int n;
  vector<vi> a, b;
  vi sum, sz;
 
  CompoundBIT(int N) : n(N), a(N), b(N), sum(N), sz(N) {}
 
  void addVal(int i, int v) {
    for(++i; i < n; i += i&-i) a[i].push_back(v);
  }
  void build() {
    for(int i = 1; i < n; i++) {
      sort(all(a[i]));
      b[i].resize(1+(sz[i] = size(a[i])));
    }
  }
  void update(int i, int v, int w) {
    for(++i; i < n; i += i&-i) {
      sum[i] += w;
      for(int j = lower_bound(all(a[i]), v) - begin(a[i]) + 1; j <= sz[i]; j += j&-j)
        b[i][j] += w;
    }
  }
 
 
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• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20