結果
問題 | No.262 面白くないビットすごろく |
ユーザー | uwi |
提出日時 | 2015-08-01 19:29:32 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 131 ms / 2,000 ms |
コード長 | 3,509 bytes |
コンパイル時間 | 3,651 ms |
コンパイル使用メモリ | 87,480 KB |
実行使用メモリ | 51,944 KB |
最終ジャッジ日時 | 2024-07-18 00:38:22 |
合計ジャッジ時間 | 4,583 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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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 | 86 ms
51,716 KB |
testcase_01 | AC | 122 ms
51,572 KB |
testcase_02 | AC | 125 ms
51,804 KB |
testcase_03 | AC | 131 ms
51,944 KB |
ソースコード
package q4xx; import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.util.Arrays; import java.util.InputMismatchException; public class Q402_2 { InputStream is; PrintWriter out; String INPUT = ""; void solve() { int A = 41; int H = 17; int[][] next = new int[A-H+1][A+1]; // [offset][start] int[][] step = new int[A-H+1][A+1]; // [offset][start] for(int o = 0;o <= A-H;o++){ for(int i = 0;i <= A;i++){ if(o == 0 && i == 0)continue; int s = 0; int j = i; for(;j < 1<<H;){ j += Integer.bitCount(j) + o; s++; } next[o][i] = j&(1<<H)-1; step[o][i] = s; } } long n = nl(); int low = 1; long ret = 0; for(int i = 0;i < n>>>H;i++){ ret += step[Integer.bitCount(i)][low]; low = next[Integer.bitCount(i)][low]; } long cur = n>>>H<<H|low; while(cur < n){ cur += Long.bitCount(cur); ret++; } if(cur == n){ out.println(ret+1); }else{ out.println(-1); } } void run() throws Exception { is = INPUT.isEmpty() ? System.in : new ByteArrayInputStream(INPUT.getBytes()); out = new PrintWriter(System.out); long s = System.currentTimeMillis(); solve(); out.flush(); if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms"); } public static void main(String[] args) throws Exception { new Q402_2().run(); } private byte[] inbuf = new byte[1024]; private int lenbuf = 0, ptrbuf = 0; private int readByte() { if(lenbuf == -1)throw new InputMismatchException(); if(ptrbuf >= lenbuf){ ptrbuf = 0; try { lenbuf = is.read(inbuf); } catch (IOException e) { throw new InputMismatchException(); } if(lenbuf <= 0)return -1; } return inbuf[ptrbuf++]; } private boolean isSpaceChar(int c) { return !(c >= 33 && c <= 126); } private int skip() { int b; while((b = readByte()) != -1 && isSpaceChar(b)); return b; } private double nd() { return Double.parseDouble(ns()); } private char nc() { return (char)skip(); } private String ns() { int b = skip(); StringBuilder sb = new StringBuilder(); while(!(isSpaceChar(b))){ // when nextLine, (isSpaceChar(b) && b != ' ') sb.appendCodePoint(b); b = readByte(); } return sb.toString(); } private char[] ns(int n) { char[] buf = new char[n]; int b = skip(), p = 0; while(p < n && !(isSpaceChar(b))){ buf[p++] = (char)b; b = readByte(); } return n == p ? buf : Arrays.copyOf(buf, p); } private char[][] nm(int n, int m) { char[][] map = new char[n][]; for(int i = 0;i < n;i++)map[i] = ns(m); return map; } private int[] na(int n) { int[] a = new int[n]; for(int i = 0;i < n;i++)a[i] = ni(); return a; } private int ni() { int num = 0, b; boolean minus = false; while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-')); if(b == '-'){ minus = true; b = readByte(); } while(true){ if(b >= '0' && b <= '9'){ num = num * 10 + (b - '0'); }else{ return minus ? -num : num; } b = readByte(); } } private long nl() { long num = 0; int b; boolean minus = false; while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-')); if(b == '-'){ minus = true; b = readByte(); } while(true){ if(b >= '0' && b <= '9'){ num = num * 10 + (b - '0'); }else{ return minus ? -num : num; } b = readByte(); } } private static void tr(Object... o) { System.out.println(Arrays.deepToString(o)); } }