Submission #966677

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
966677	2024-04-20 08:09:44	Soumya1	Circle selection (APIO18_circle_selection)	C++17	72 / 100	3097 ms	202128 KiB

circle_selection

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#include <bits/stdc++.h>
using namespace std;
const int mxN = 3e5 + 5;
int x[mxN], y[mxN], r[mxN], pos[mxN], ans[mxN];
set<pair<int, int>> st[2 * 4 * mxN];
int base;
char rr;
void rf(int &x) {
  x = 0;
  int sgn = 0;
  while (rr < 48 && rr != '-') rr = getchar();
  if (rr == '-') { sgn = 1; rr = getchar(); }
  while (47 < rr) { x = (x << 3) + (x << 1) + (rr & 15); rr = getchar(); }
  if (sgn) x = -x;
}
void upd(int p, int q, int i) {
  p += base; q += base;
  p--; q--;
  while (p <= q) {
    if (p & 1) st[p++].insert({y[i], i});
    if (~q & 1) st[q--].insert({y[i], i});
    p >>= 1; q >>= 1;
  }
}
void update(int a, int b) {
  if (pos[b] < pos[ans[a]] && 1LL * (x[a] - x[b]) * (x[a] - x[b]) + 1LL * (y[a] - y[b]) * (y[a] - y[b]) <= 1LL * (r[a] + r[b]) * (r[a] + r[b]))
    ans[a] = b;
}
void check(int x, int i) {
  auto it = lower_bound(st[x].begin(), st[x].end(), pair<int, int> {y[i], -2e9});
 
 
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• Subtask 1: 7 / 7
• Subtask 2: 12 / 12
• Subtask 3: 0 / 15
• Subtask 4: 23 / 23
• Subtask 5: 30 / 30
• Subtask 6: 0 / 13