結果
問題 | No.219 巨大数の概算 |
ユーザー |
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提出日時 | 2023-07-07 08:58:06 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 192 ms / 1,500 ms |
コード長 | 2,885 bytes |
コンパイル時間 | 5,219 ms |
コンパイル使用メモリ | 90,476 KB |
実行使用メモリ | 44,284 KB |
最終ジャッジ日時 | 2024-07-21 03:47:12 |
合計ジャッジ時間 | 17,414 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 |
---|---|
sample | AC * 1 |
other | AC * 51 |
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 n = sc.nextInt(); StringBuilder sb = new StringBuilder(); while (n-- > 0) { sb.append(pow(new BigNumber(sc.nextInt()), sc.nextInt())).append("\n"); } System.out.print(sb); } static BigNumber pow(BigNumber x, int p) { if (p == 0) { return new BigNumber(1); } else if (p % 2 == 0) { return pow(x.pow2(), p / 2); } else { return pow(x, p - 1).multiply(x); } } static class BigNumber { double num; long value; public BigNumber(double num, long value) { this.num = num; this.value = value; normalize(); } public BigNumber(double num) { this(num, 0); } private void normalize() { while (num >= 10) { value++; num /= 10; } } public BigNumber pow2() { return new BigNumber(num * num, value * 2); } public BigNumber multiply(BigNumber x) { return new BigNumber(num * x.num, value + x.value); } public String toString() { int ten = (int)(num * 10); StringBuilder sb = new StringBuilder(); sb.append(ten / 10).append(" ").append(ten % 10).append(" ").append(value); return sb.toString(); } } } 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(); } }