結果
問題 | No.672 最長AB列 |
ユーザー | Grenache |
提出日時 | 2018-04-21 19:37:56 |
言語 | Java19 (openjdk 21) |
結果 |
AC
|
実行時間 | 784 ms / 2,000 ms |
コード長 | 4,461 bytes |
コンパイル時間 | 5,106 ms |
コンパイル使用メモリ | 75,140 KB |
実行使用メモリ | 55,360 KB |
最終ジャッジ日時 | 2023-09-10 04:47:57 |
合計ジャッジ時間 | 10,325 ms |
ジャッジサーバーID (参考情報) |
judge14 / judge15 |
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 | 43 ms
49,296 KB |
testcase_01 | AC | 41 ms
49,356 KB |
testcase_02 | AC | 43 ms
49,396 KB |
testcase_03 | AC | 43 ms
49,508 KB |
testcase_04 | AC | 42 ms
49,240 KB |
testcase_05 | AC | 42 ms
49,168 KB |
testcase_06 | AC | 41 ms
49,300 KB |
testcase_07 | AC | 43 ms
49,436 KB |
testcase_08 | AC | 44 ms
49,340 KB |
testcase_09 | AC | 122 ms
54,120 KB |
testcase_10 | AC | 126 ms
53,812 KB |
testcase_11 | AC | 131 ms
54,852 KB |
testcase_12 | AC | 493 ms
54,940 KB |
testcase_13 | AC | 311 ms
54,472 KB |
testcase_14 | AC | 631 ms
55,168 KB |
testcase_15 | AC | 726 ms
55,360 KB |
testcase_16 | AC | 784 ms
55,164 KB |
testcase_17 | AC | 157 ms
55,004 KB |
testcase_18 | AC | 122 ms
54,460 KB |
ソースコード
import java.io.*; import java.util.*; public class Main_yukicoder672 { private static Scanner sc; private static Printer pr; private static void solve() { char[] s = sc.next().toCharArray(); int n = s.length; int[] cnta = new int[n + 1]; for (int i = 0; i < n; i++) { cnta[i + 1] += cnta[i]; if (s[i] == 'A') { cnta[i + 1]++; } } int max = 0; for (int i = 0; i < n; i++) { for (int j = i + (n - i) / 2 * 2; j > i; ) { int ca = cnta[j] - cnta[i]; int cb = j - i - ca; if (ca - cb == 0) { max = Math.max(max, j - i); break; } j -= Math.abs(ca - cb); } } pr.println(max); } // --------------------------------------------------- public static void main(String[] args) { sc = new Scanner(INPUT == null ? System.in : new ByteArrayInputStream(INPUT.getBytes())); pr = new Printer(System.out); solve(); // pr.close(); pr.flush(); // sc.close(); } static String INPUT = null; @SuppressWarnings("unused") private static class Scanner { BufferedReader br; Scanner (InputStream in) { br = new BufferedReader(new InputStreamReader(in)); } private boolean isPrintable(int ch) { return ch >= '!' && ch <= '~'; } private boolean isCRLF(int ch) { return ch == '\n' || ch == '\r' || ch == -1; } private int nextPrintable() { try { int ch; while (!isPrintable(ch = br.read())) { if (ch == -1) { throw new NoSuchElementException(); } } return ch; } catch (IOException e) { throw new NoSuchElementException(); } } String next() { try { int ch = nextPrintable(); StringBuilder sb = new StringBuilder(); do { sb.appendCodePoint(ch); } while (isPrintable(ch = br.read())); return sb.toString(); } catch (IOException e) { throw new NoSuchElementException(); } } int nextInt() { try { // parseInt from Integer.parseInt() boolean negative = false; int res = 0; int limit = -Integer.MAX_VALUE; int radix = 10; int fc = nextPrintable(); if (fc < '0') { if (fc == '-') { negative = true; limit = Integer.MIN_VALUE; } else if (fc != '+') { throw new NumberFormatException(); } fc = br.read(); } int multmin = limit / radix; int ch = fc; do { int digit = ch - '0'; if (digit < 0 || digit >= radix) { throw new NumberFormatException(); } if (res < multmin) { throw new NumberFormatException(); } res *= radix; if (res < limit + digit) { throw new NumberFormatException(); } res -= digit; } while (isPrintable(ch = br.read())); return negative ? res : -res; } catch (IOException e) { throw new NoSuchElementException(); } } long nextLong() { try { // parseLong from Long.parseLong() boolean negative = false; long res = 0; long limit = -Long.MAX_VALUE; int radix = 10; int fc = nextPrintable(); if (fc < '0') { if (fc == '-') { negative = true; limit = Long.MIN_VALUE; } else if (fc != '+') { throw new NumberFormatException(); } fc = br.read(); } long multmin = limit / radix; int ch = fc; do { int digit = ch - '0'; if (digit < 0 || digit >= radix) { throw new NumberFormatException(); } if (res < multmin) { throw new NumberFormatException(); } res *= radix; if (res < limit + digit) { throw new NumberFormatException(); } res -= digit; } while (isPrintable(ch = br.read())); return negative ? res : -res; } catch (IOException e) { throw new NoSuchElementException(); } } float nextFloat() { return Float.parseFloat(next()); } double nextDouble() { return Double.parseDouble(next()); } String nextLine() { try { int ch; while (isCRLF(ch = br.read())) { if (ch == -1) { throw new NoSuchElementException(); } } StringBuilder sb = new StringBuilder(); do { sb.appendCodePoint(ch); } while (!isCRLF(ch = br.read())); return sb.toString(); } catch (IOException e) { throw new NoSuchElementException(); } } void close() { try { br.close(); } catch (IOException e) { // throw new NoSuchElementException(); } } } private static class Printer extends PrintWriter { Printer(OutputStream out) { super(out); } } }