結果
問題 | No.672 最長AB列 |
ユーザー | threepipes_s |
提出日時 | 2018-04-13 22:37:52 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 139 ms / 2,000 ms |
コード長 | 2,680 bytes |
コンパイル時間 | 2,144 ms |
コンパイル使用メモリ | 78,644 KB |
実行使用メモリ | 42,692 KB |
最終ジャッジ日時 | 2024-06-27 16:29:34 |
合計ジャッジ時間 | 4,778 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 61 ms
39,700 KB |
testcase_01 | AC | 60 ms
39,612 KB |
testcase_02 | AC | 59 ms
39,708 KB |
testcase_03 | AC | 60 ms
39,636 KB |
testcase_04 | AC | 59 ms
39,688 KB |
testcase_05 | AC | 59 ms
39,720 KB |
testcase_06 | AC | 59 ms
39,924 KB |
testcase_07 | AC | 58 ms
39,904 KB |
testcase_08 | AC | 58 ms
39,744 KB |
testcase_09 | AC | 134 ms
42,296 KB |
testcase_10 | AC | 135 ms
42,104 KB |
testcase_11 | AC | 137 ms
42,248 KB |
testcase_12 | AC | 138 ms
42,692 KB |
testcase_13 | AC | 139 ms
42,432 KB |
testcase_14 | AC | 135 ms
42,248 KB |
testcase_15 | AC | 135 ms
42,112 KB |
testcase_16 | AC | 138 ms
42,116 KB |
testcase_17 | AC | 134 ms
42,096 KB |
testcase_18 | AC | 125 ms
42,236 KB |
ソースコード
import java.io.*; import java.math.BigInteger; import java.util.Arrays; public class Main implements Runnable { static ContestScanner in; static Writer out; public static void main(String[] args) { new Thread(null, new Main(), "", 16 * 1024 * 1024).start(); } public void run() { Main main = new Main(); try { in = new ContestScanner(); out = new Writer(); main.solve(); out.close(); in.close(); } catch (IOException e) { e.printStackTrace(); } } void solve() throws IOException { char[] s = in.nextToken().toCharArray(); int n = s.length; int[] height = new int[n + 1]; final int base = 200000; height[0] = base; int[] table = new int[base * 2 + 1]; Arrays.fill(table, -1); table[base] = 0; for (int i = 0; i < n; i++) { height[i + 1] = height[i] + (s[i] == 'A' ? 1 : -1); if (table[height[i + 1]] == -1) table[height[i + 1]] = i + 1; } int max = 0; for (int i = n; i >= 0; i--) { max = Math.max(max, i - table[height[i]]); } System.out.println(max); } } class Writer extends PrintWriter{ public Writer(String filename)throws IOException {super(new BufferedWriter(new FileWriter(filename)));} public Writer()throws IOException {super(System.out);} } class ContestScanner implements Closeable { private BufferedReader in;private int c=-2; public ContestScanner()throws IOException {in=new BufferedReader(new InputStreamReader(System.in));} public ContestScanner(String filename)throws IOException {in=new BufferedReader(new InputStreamReader(new FileInputStream(filename)));} public String nextToken()throws IOException { StringBuilder sb=new StringBuilder(); while((c=in.read())!=-1&&Character.isWhitespace(c)); while(c!=-1&&!Character.isWhitespace(c)){sb.append((char)c);c=in.read();} return sb.toString(); } public String readLine()throws IOException{ StringBuilder sb=new StringBuilder();if(c==-2)c=in.read(); while(c!=-1&&c!='\n'&&c!='\r'){sb.append((char)c);c=in.read();} return sb.toString(); } public long nextLong()throws IOException,NumberFormatException {return Long.parseLong(nextToken());} public int nextInt()throws NumberFormatException,IOException {return(int)nextLong();} public double nextDouble()throws NumberFormatException,IOException {return Double.parseDouble(nextToken());} public void close() throws IOException {in.close();} }