結果
| 問題 |
No.698 ペアでチームを作ろう
|
| ユーザー |
|
| 提出日時 | 2018-06-09 16:47:40 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 81 ms / 1,000 ms |
| コード長 | 2,694 bytes |
| コンパイル時間 | 2,517 ms |
| コンパイル使用メモリ | 78,980 KB |
| 実行使用メモリ | 38,408 KB |
| 最終ジャッジ日時 | 2024-06-30 12:37:16 |
| 合計ジャッジ時間 | 4,473 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 12 |
ソースコード
import java.io.IOException;
import java.io.InputStream;
import java.math.BigInteger;
import java.util.Arrays;
import java.util.NoSuchElementException;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
new Main().run();
}
void run() {
FastScanner sc = new FastScanner();
int n = sc.nextInt();
long[] dp = new long[1 << n];
long[] a = new long[n];
for (int i = 0; i < n; ++i)
a[i] = sc.nextLong();
Arrays.sort(a);
for (int s = 0; s < 1 << n; ++s) {
for (int i = 0; i < n; ++i) {
for (int j = i + 1; j < n; ++j) {
if ((s & (1 << i)) > 0 || (s & (1 << j)) > 0) {
continue;
}
dp[s | (1 << i) | (1 << j)] = Math.max(dp[s | (1 << i) | (1 << j)], dp[s] + (a[i] ^ a[j]));
}
}
}
System.out.println(dp[(1 << n) - 1]);
}
class FastScanner {
private final InputStream in = System.in;
private final byte[] buffer = new byte[1024];
private int ptr = 0;
private int buflen = 0;
private boolean hasNextByte() {
if (ptr < buflen) {
return true;
} else {
ptr = 0;
try {
buflen = in.read(buffer);
} catch (IOException e) {
e.printStackTrace();
}
if (buflen <= 0) {
return false;
}
}
return true;
}
private int readByte() {
if (hasNextByte())
return buffer[ptr++];
else
return -1;
}
private boolean isPrintableChar(int c) {
return 33 <= c && c <= 126;
}
public boolean hasNext() {
while (hasNextByte() && !isPrintableChar(buffer[ptr]))
ptr++;
return hasNextByte();
}
public String next() {
if (!hasNext())
throw new NoSuchElementException();
StringBuilder sb = new StringBuilder();
int b = readByte();
while (isPrintableChar(b)) {
sb.appendCodePoint(b);
b = readByte();
}
return sb.toString();
}
public long nextLong() {
if (!hasNext())
throw new NoSuchElementException();
long n = 0;
boolean minus = false;
int b = readByte();
if (b == '-') {
minus = true;
b = readByte();
}
if (b < '0' || '9' < b) {
throw new NumberFormatException();
}
while (true) {
if ('0' <= b && b <= '9') {
n *= 10;
n += b - '0';
} else if (b == -1 || !isPrintableChar(b)) {
return minus ? -n : n;
} else {
throw new NumberFormatException();
}
b = readByte();
}
}
public int nextInt() {
long nl = nextLong();
if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE)
throw new NumberFormatException();
return (int) nl;
}
public double nextDouble() {
return Double.parseDouble(next());
}
}
void tr(Object... objects) {
System.out.println(Arrays.deepToString(objects));
}
}