結果
| 問題 |
No.2454 Former < Latter
|
| コンテスト | |
| ユーザー |
tenten
|
| 提出日時 | 2023-09-04 13:32:12 |
| 言語 | Java (openjdk 23) |
| 結果 |
RE
|
| 実行時間 | - |
| コード長 | 3,024 bytes |
| コンパイル時間 | 3,708 ms |
| コンパイル使用メモリ | 92,948 KB |
| 実行使用メモリ | 77,960 KB |
| 最終ジャッジ日時 | 2024-06-22 12:00:09 |
| 合計ジャッジ時間 | 9,382 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 9 RE * 14 |
ソースコード
import java.io.*;
import java.util.*;
import java.util.stream.*;
public class Main {
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner();
int t = sc.nextInt();
StringBuilder sb = new StringBuilder();
while (t-- > 0) {
int n = sc.nextInt();
char[] inputs = sc.next().toCharArray();
long[][] hashes = new long[10][n];
for (int i = 0; i < n; i++) {
hashes[0][i] = inputs[i] - 'a';
}
for (int i = 1; i < 10; i++) {
for (int j = 0; j + i < n; j++) {
hashes[i][j] = hashes[i - 1][j] * 26 + hashes[0][j + i];
}
}
int ans = 0;
for (int i = 1; i < n; i++) {
int left = i;
int right = n - i;
int idx = 0;
boolean decided = false;
while (left - idx > 0 && right - idx> 0) {
int length = Math.min(10, Math.min(left - idx, right - idx));
if (hashes[length - idx - 1][0 + idx] == hashes[length - idx - 1][i + idx]) {
idx += 10;
} else if (hashes[length - idx - 1][0 + idx] < hashes[length - idx - 1][i + idx]) {
ans++;
decided = true;
break;
} else {
decided = true;
break;
}
}
if (!decided) {
if (left < right) {
ans++;
}
}
}
sb.append(ans).append("\n");
}
System.out.print(sb);
}
}
class Utilities {
static String arrayToLineString(Object[] arr) {
return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n"));
}
static String arrayToLineString(int[] arr) {
return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new));
}
}
class Scanner {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
StringTokenizer st = new StringTokenizer("");
StringBuilder sb = new StringBuilder();
public Scanner() throws Exception {
}
public int nextInt() throws Exception {
return Integer.parseInt(next());
}
public long nextLong() throws Exception {
return Long.parseLong(next());
}
public double nextDouble() throws Exception {
return Double.parseDouble(next());
}
public int[] nextIntArray() throws Exception {
return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
}
public String next() throws Exception {
while (!st.hasMoreTokens()) {
st = new StringTokenizer(br.readLine());
}
return st.nextToken();
}
}
tenten