Submission #204940

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
204940	2020-02-27 13:52:36	oolimry	Circle selection (APIO18_circle_selection)	C++14	49 / 100	3096 ms	352516 KiB

circle_selection

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#include <bits/stdc++.h>
 
using namespace std; 
int n; 
 
struct Circle{
  long long x, y, r, id;
} sorted[300005], arr[300005];;
 
inline bool intersect(Circle a, Circle b){
  return (a.x - b.x) * (a.x - b.x) + (a.y - b.y) * (a.y - b.y) <= (a.r + b.r) * (a.r + b.r);
}
 
inline long long ii(long long a, long long b){
  return a * (1LL << 32LL) + b;
}
long long ans[300005];
 
 struct custom_hash {
    static uint64_t splitmix64(uint64_t x) {
        // http://xorshift.di.unimi.it/splitmix64.c
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }
    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
 
 
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• Subtask 1: 7 / 7
• Subtask 2: 12 / 12
• Subtask 3: 0 / 15
• Subtask 4: 0 / 23
• Subtask 5: 30 / 30
• Subtask 6: 0 / 13