제출 #658764

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
658764	2022-11-14 20:39:37	600Mihnea	원 고르기 (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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컴파일 시 표준 에러 (stderr) 메시지

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);
      |     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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• Subtask 6: 13 / 13