Submission #869491

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
869491	2023-11-04 12:57:59	Hakiers	Monochrome Points (JOI20_monochrome)	C++17	35 / 100	2016 ms	6348 KiB

monochrome

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#include <bits/stdc++.h>
using namespace std;
const int BASE = 1 << 19;
int TREE[BASE << 1];
int n;
string monochrome;
queue<int> BPOS;
queue<int> WPOS;
void add(int v, int val){
  v+=BASE;
  TREE[v] += val;
  v/=2;
  while(v > 0){
    int l = 2*v, r = 2*v+1;
    TREE[v] = TREE[l] + TREE[r];
    v/=2;
  }
}
int query(int a, int b){
  a += BASE - 1;
  b += BASE + 1;
  
  int res = 0;
  while(a/2 != b/2){
    if(!(a&1)) res += TREE[a+1];
    if(b&1) res += TREE[b-1];
    a/=2; b/=2;
  }
  return res;
 
 
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• Subtask 2: 21 / 21
• Subtask 3: 10 / 10
• Subtask 4: 0 / 65