結果
問題 | No.168 ものさし |
ユーザー | fujisu |
提出日時 | 2015-03-20 00:15:40 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 226 ms / 2,000 ms |
コード長 | 3,159 bytes |
コンパイル時間 | 2,494 ms |
コンパイル使用メモリ | 77,924 KB |
実行使用メモリ | 50,776 KB |
最終ジャッジ日時 | 2024-12-24 06:57:15 |
合計ジャッジ時間 | 6,110 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 19 |
ソースコード
import java.io.IOException; import java.util.Arrays; import java.util.InputMismatchException; public class Main { int n; boolean[] vis; long[][] dist; boolean dfs(int k, long ub) { if (k == n - 1) { return true; } if (vis[k]) { return false; } vis[k] = true; for (int i = 0; i < n; i++) { if (i == k) { continue; } if (ub < dist[k][i]) { continue; } if (dfs(i, ub)) { return true; } } return false; } void run() { MyScanner sc = new MyScanner(); n = sc.nextInt(); long[] x = new long[n]; long[] y = new long[n]; for (int i = 0; i < n; i++) { x[i] = sc.nextLong(); y[i] = sc.nextLong(); } dist = new long[n][n]; for (int i = 0; i < n; i++) { for (int j = i + 1; j < n; j++) { long len = Math.abs(x[i] - x[j]) * Math.abs(x[i] - x[j]) + Math.abs(y[i] - y[j]) * Math.abs(y[i] - y[j]); dist[i][j] = dist[j][i] = len; } } vis = new boolean[n]; int low = 0, high = 1_000_000_000 + 10; while (low + 1 < high) { Arrays.fill(vis, false); int mid = (low + high) / 2; if (dfs(0, 100L * mid * mid)) { high = mid; } else { low = mid; } } System.out.println((low + 1) * 10); } public static void main(String[] args) { new Main().run(); } public void mapDebug(int[][] a) { System.out.println("--------map display---------"); for (int i = 0; i < a.length; i++) { for (int j = 0; j < a[i].length; j++) { System.out.printf("%3d ", a[i][j]); } System.out.println(); } System.out.println("----------------------------" + '\n'); } class MyScanner { int read() { try { return System.in.read(); } catch (IOException e) { throw new InputMismatchException(); } } boolean isSpaceChar(int c) { return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1; } boolean isEndline(int c) { return c == '\n' || c == '\r' || c == -1; } int nextInt() { return Integer.parseInt(next()); } int[] nextIntArray(int n) { int[] array = new int[n]; for (int i = 0; i < n; i++) array[i] = nextInt(); return array; } long nextLong() { return Long.parseLong(next()); } long[] nextLongArray(int n) { long[] array = new long[n]; for (int i = 0; i < n; i++) array[i] = nextLong(); return array; } double nextDouble() { return Double.parseDouble(next()); } double[] nextDoubleArray(int n) { double[] array = new double[n]; for (int i = 0; i < n; i++) array[i] = nextDouble(); return array; } String next() { int c = read(); while (isSpaceChar(c)) c = read(); StringBuilder res = new StringBuilder(); do { res.appendCodePoint(c); c = read(); } while (!isSpaceChar(c)); return res.toString(); } String[] nextStringArray(int n) { String[] array = new String[n]; for (int i = 0; i < n; i++) array[i] = next(); return array; } String nextLine() { int c = read(); while (isEndline(c)) c = read(); StringBuilder res = new StringBuilder(); do { res.appendCodePoint(c); c = read(); } while (!isEndline(c)); return res.toString(); } } }