Submission #885765

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
885765	2023-12-10 16:15:21	dsyz	Examination (JOI19_examination)	C++17	100 / 100	622 ms	271724 KiB

examination

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define MAXN (1000005)
struct node {
  ll s,e,m,v;
  node *l, *r;
  node(ll _s,ll _e){
    s = _s;
    e = _e;
    m = (s + e) / 2;
    v = 0;
    if(s != e){
      l = new node(s,m);
      r = new node(m + 1,e);
    }
  }
  void update(ll x,ll nval){
    if(s == e){
      v += nval;
      return;
    }else{
      if(x > m) r->update(x,nval);
      else l->update(x,nval);
      v = l->v + r->v;
    }
  }
  ll query(ll x,ll y){
    if(s == x && e == y){
      return v;
 
 
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• Subtask 2: 20 / 20
• Subtask 3: 21 / 21
• Subtask 4: 57 / 57