Submission #777115

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
777115	2023-07-08 16:53:35	ind1v	Addk (eJOI21_addk)	C++11	100 / 100	86 ms	8516 KiB

Main

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#include <bits/stdc++.h>
using namespace std;
const int N = 100005;
const int K = 15;
struct fenwick_tree {
  int64_t fenw[N];
  
  fenwick_tree() {
    memset(fenw, 0, sizeof(fenw));
  }
  
  void upd(int idx, long long val) {
    for (; idx < N; idx |= (idx + 1)) {
      fenw[idx] += val;
    }
  }
  
  int64_t get(int idx) {
    int64_t res = 0;
    for (; idx >= 0; idx &= (idx + 1), --idx) {
      res += fenw[idx];
    }
    return res;
  }
  
  int64_t get(int l, int r) {
    return get(r) - get(l - 1);
 
 
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• Subtask 1: 36 / 36
• Subtask 2: 56 / 56
• Subtask 3: 8 / 8