Submission #658764

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
658764	2022-11-14 20:39:37	600Mihnea	Circle selection (APIO18_circle_selection)	C++17	100 / 100	2559 ms	54528 KiB

circle_selection

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bool home = 0;
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = (int) 3e5 + 7;
const int INF = (int) 1e9 + 7;
int n;
struct Circle {
  int x;
  int y;
  int r;
};
bool doIntersect(Circle a, Circle b) {
  /// dist <= a.r + b.r
  /// dist ^  2 <= (a.r + b.r) ^ 2
  return 1LL * (a.x - b.x) * (a.x - b.x) + 1LL * (a.y - b.y) * (a.y - b.y) <= 1LL * (a.r + b.r) * (a.r + b.r);
}
Circle circles[N];
int ret[N];
map<pair<int, int>, vector<int>> guysAtPosition;
 
 
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Compilation message (stderr)

circle_selection.cpp: In function 'int main()':
circle_selection.cpp:73:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   73 |     freopen ("input.txt", "r", stdin);
      |     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 12 / 12
• Subtask 3: 15 / 15
• Subtask 4: 23 / 23
• Subtask 5: 30 / 30
• Subtask 6: 13 / 13