Submission #905061

#	Time	Username	Problem	Language	Result	Execution time	Memory
905061		nguyentunglam	원 고르기 (APIO18_circle_selection)	C++17	7 / 100	3097 ms	18644 KiB

circle_selection

#include<bits/stdc++.h>
#define all(v) v.begin(), v.end()
#define endl "\n"
#define int long long
using namespace std;

const int N = 3e5 + 10;

int n;

int x[N], y[N], r[N];

int ans[N];

int32_t main() {
  #define task ""

  cin.tie(0) -> sync_with_stdio(0);

  if (fopen("task.inp", "r")) {
    freopen("task.inp", "r", stdin);
    freopen("task.out", "w", stdout);
  }

  if (fopen(task".inp", "r")) {
    freopen (task".inp", "r", stdin);
    freopen (task".out", "w", stdout);
  }

  cin >> n;

  for(int i = 1; i <= n; i++) cin >> x[i] >> y[i] >> r[i];

  while (1) {
    int idx = 0;
    for(int i = 1; i <= n; i++) if (!ans[i]) if (r[i] > r[idx]) idx = i;
    if (idx == 0) break;
    for(int i = 1; i <= n; i++) if (!ans[i]) {
      int dist = (x[i] - x[idx]) * (x[i] - x[idx]) + (y[i] - y[idx]) * (y[i] - y[idx]);
      if (dist <= (r[i] + r[idx]) * (r[i] + r[idx])) ans[i] = idx;
    }
  }

  for(int i = 1; i <= n; i++) cout << ans[i] << " ";
}

Compilation message (stderr)

circle_selection.cpp: In function 'int32_t main()':
circle_selection.cpp:21:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |     freopen("task.inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
circle_selection.cpp:22:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |     freopen("task.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
circle_selection.cpp:26:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |     freopen (task".inp", "r", stdin);
      |     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
circle_selection.cpp:27:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |     freopen (task".out", "w", stdout);
      |     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 0 / 12
• Subtask 3: 0 / 15
• Subtask 4: 0 / 23
• Subtask 5: 0 / 30
• Subtask 6: 0 / 13