結果
問題 | No.822 Bitwise AND |
ユーザー | kusomushi |
提出日時 | 2019-07-09 21:02:57 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 125 ms / 2,000 ms |
コード長 | 5,133 bytes |
コンパイル時間 | 2,665 ms |
コンパイル使用メモリ | 90,448 KB |
実行使用メモリ | 51,576 KB |
最終ジャッジ日時 | 2024-06-25 18:18:08 |
合計ジャッジ時間 | 4,930 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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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 | 125 ms
51,212 KB |
testcase_01 | AC | 74 ms
51,464 KB |
testcase_02 | AC | 71 ms
50,792 KB |
testcase_03 | AC | 59 ms
50,304 KB |
testcase_04 | AC | 106 ms
51,400 KB |
testcase_05 | AC | 95 ms
51,484 KB |
testcase_06 | AC | 103 ms
51,576 KB |
testcase_07 | AC | 104 ms
51,368 KB |
testcase_08 | AC | 98 ms
51,340 KB |
testcase_09 | AC | 94 ms
51,508 KB |
testcase_10 | AC | 67 ms
50,592 KB |
testcase_11 | AC | 62 ms
50,012 KB |
testcase_12 | AC | 96 ms
51,308 KB |
testcase_13 | AC | 69 ms
50,856 KB |
testcase_14 | AC | 61 ms
50,352 KB |
testcase_15 | AC | 92 ms
51,228 KB |
testcase_16 | AC | 72 ms
51,016 KB |
ソースコード
import java.io.*; import java.util.Arrays; import java.util.StringJoiner; import java.util.StringTokenizer; public class Main { static int N, K; public static void main(String[] args) { FastScanner sc = new FastScanner(System.in); N = sc.nextInt(); K = sc.nextInt(); System.out.println(solve()); } static String solve() { // x >= N (x & y == N) // x < high (Nにならない) int high = N == 0 ? 1 : Integer.highestOneBit(N) * 2; int cnt = 0; for (int x = N; x < high; x++) { for (int k = 0; k <= K; k++) { int y = x+k; if( (x & y) == N ) cnt++; } } // 無限にいるなら範囲外の場所を多少調べたら出てくるはず // 適当にhighより大きい場所を探す、何個くらいとかはわからんので適当に for (int i = 0; i < 100_000; i++) { int x = high + i; for (int k = 0; k <= K; k++) { int y = x+k; if( (x & y) == N ) return "INF"; } } return "" + cnt; } @SuppressWarnings("unused") static class FastScanner { private BufferedReader reader; private StringTokenizer tokenizer; FastScanner(InputStream in) { reader = new BufferedReader(new InputStreamReader(in)); tokenizer = null; } String next() { if (tokenizer == null || !tokenizer.hasMoreTokens()) { try { tokenizer = new StringTokenizer(reader.readLine()); } catch (IOException e) { throw new RuntimeException(e); } } return tokenizer.nextToken(); } String nextLine() { if (tokenizer == null || !tokenizer.hasMoreTokens()) { try { return reader.readLine(); } catch (IOException e) { throw new RuntimeException(e); } } return tokenizer.nextToken("\n"); } long nextLong() { return Long.parseLong(next()); } int nextInt() { return Integer.parseInt(next()); } int[] nextIntArray(int n) { int[] a = new int[n]; for (int i = 0; i < n; i++) a[i] = nextInt(); return a; } int[] nextIntArray(int n, int delta) { int[] a = new int[n]; for (int i = 0; i < n; i++) a[i] = nextInt() + delta; return a; } long[] nextLongArray(int n) { long[] a = new long[n]; for (int i = 0; i < n; i++) a[i] = nextLong(); return a; } } static void writeLines(int[] as) { PrintWriter pw = new PrintWriter(System.out); for (int a : as) pw.println(a); pw.flush(); } static void writeLines(long[] as) { PrintWriter pw = new PrintWriter(System.out); for (long a : as) pw.println(a); pw.flush(); } static void writeSingleLine(int[] as) { PrintWriter pw = new PrintWriter(System.out); for (int i = 0; i < as.length; i++) { if (i != 0) pw.print(" "); pw.print(as[i]); } pw.println(); pw.flush(); } static int max(int... as) { int max = Integer.MIN_VALUE; for (int a : as) max = Math.max(a, max); return max; } static int min(int... as) { int min = Integer.MAX_VALUE; for (int a : as) min = Math.min(a, min); return min; } static void debug(Object... args) { StringJoiner j = new StringJoiner(" "); for (Object arg : args) { if (arg == null) j.add("null"); else if (arg instanceof int[]) j.add(Arrays.toString((int[]) arg)); else if (arg instanceof long[]) j.add(Arrays.toString((long[]) arg)); else if (arg instanceof double[]) j.add(Arrays.toString((double[]) arg)); else if (arg instanceof Object[]) j.add(Arrays.toString((Object[]) arg)); else j.add(arg.toString()); } System.err.println(j.toString()); } static void printSingleLine(int[] array) { PrintWriter pw = new PrintWriter(System.out); for (int i = 0; i < array.length; i++) { if (i != 0) pw.print(" "); pw.print(array[i]); } pw.println(); pw.flush(); } static int lowerBound(int[] array, int value) { int lo = 0, hi = array.length, mid; while (lo < hi) { mid = (hi + lo) / 2; if (array[mid] < value) lo = mid + 1; else hi = mid; } return lo; } static int upperBound(int[] array, int value) { int lo = 0, hi = array.length, mid; while (lo < hi) { mid = (hi + lo) / 2; if (array[mid] <= value) lo = mid + 1; else hi = mid; } return lo; } }