結果
| 問題 |
No.519 アイドルユニット
|
| コンテスト | |
| ユーザー |
hiromi_ayase
|
| 提出日時 | 2017-05-30 15:20:32 |
| 言語 | Java (openjdk 23) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 3,559 bytes |
| コンパイル時間 | 3,323 ms |
| コンパイル使用メモリ | 77,672 KB |
| 実行使用メモリ | 133,008 KB |
| 最終ジャッジ日時 | 2024-09-21 19:20:37 |
| 合計ジャッジ時間 | 7,104 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| other | TLE * 1 -- * 33 |
ソースコード
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.NoSuchElementException;
public class Main {
public static void main(String[] args) {
FastScanner sc = new FastScanner();
int N = sc.nextInt();
int[][] f = sc.nextIntTable(N, N);
Arrays.fill(dp, -1);
System.out.println(dfs(0, N, f));
}
private static int[] dp = new int[1 << 24];
private static int dfs(int state, int n, int[][] f) {
if (dp[state] >= 0) {
return dp[state];
}
int ret = 0;
for (int i = 0; i < n; i ++) {
for (int j = i + 1; j < n; j ++) {
if ((state & (1 << i)) == 0 && (state & (1 << j)) == 0) {
ret = Math.max(ret, dfs(state | (1 << i) | (1 << j), n, f) + f[i][j]);
}
}
}
dp[state] = ret;
return ret;
}
}
class FastScanner {
public static String debug = null;
private final InputStream in = System.in;
private int ptr = 0;
private int buflen = 0;
private byte[] buffer = new byte[1024];
private boolean eos = false;
private boolean hasNextByte() {
if (ptr < buflen) {
return true;
} else {
ptr = 0;
try {
if (debug != null) {
buflen = debug.length();
buffer = debug.getBytes();
debug = "";
eos = true;
} else {
buflen = in.read(buffer);
}
} catch (IOException e) {
e.printStackTrace();
}
if (buflen < 0) {
eos = true;
return false;
} else if (buflen == 0) {
return false;
}
}
return true;
}
private int readByte() {
if (hasNextByte())
return buffer[ptr++];
else
return -1;
}
private static boolean isPrintableChar(int c) {
return 33 <= c && c <= 126;
}
private void skipUnprintable() {
while (hasNextByte() && !isPrintableChar(buffer[ptr]))
ptr++;
}
public boolean isEOS() {
return this.eos;
}
public boolean hasNext() {
skipUnprintable();
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() {
return (int) nextLong();
}
public long[] nextLongList(int n) {
return nextLongTable(1, n)[0];
}
public int[] nextIntList(int n) {
return nextIntTable(1, n)[0];
}
public long[][] nextLongTable(int n, int m) {
long[][] ret = new long[n][m];
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
ret[i][j] = nextLong();
}
}
return ret;
}
public int[][] nextIntTable(int n, int m) {
int[][] ret = new int[n][m];
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
ret[i][j] = nextInt();
}
}
return ret;
}
}
hiromi_ayase