結果
問題 | No.273 回文分解 |
ユーザー |
|
提出日時 | 2020-03-18 17:03:15 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 130 ms / 2,000 ms |
コード長 | 2,955 bytes |
コンパイル時間 | 2,207 ms |
コンパイル使用メモリ | 79,804 KB |
実行使用メモリ | 41,424 KB |
最終ジャッジ日時 | 2024-12-14 02:17:05 |
合計ジャッジ時間 | 7,675 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 32 |
ソースコード
import java.io.IOException;import java.io.InputStream;import java.util.ArrayDeque;import java.util.Arrays;import java.util.NoSuchElementException;import java.util.Scanner;class Main {public static void main(String[] args) {new Main().run();}void run() {Scanner sc=new Scanner(System.in);char[] cs=sc.next().toCharArray();int[] dp=new int[cs.length];for(int i=0;i<cs.length;++i) {int p=0;do {if(2*p+1<cs.length)dp[i+p]=Math.max(dp[i+p],Math.max((i-p-1>=0?dp[i-p-1]:0),2*p+1));++p;}while(i>=p&&i+p<cs.length&&cs[i-p]==cs[i+p]);p=0;do {if(2*p<cs.length)dp[i+p]=Math.max(dp[i+p],Math.max((i-p>=0?dp[i-p]:0),2*p));++p;}while(i-p+1>=0&&i+p<cs.length&&cs[i-p+1]==cs[i+p]);}System.out.println(dp[cs.length-1]);}void tr(Object...objects) {System.out.println(Arrays.deepToString(objects));}}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 static 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());}}