結果
| 問題 |
No.168 ものさし
|
| コンテスト | |
| 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();
}
}
}
fujisu