Submission #3275010
Source Code Expand
import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.util.InputMismatchException; public class Main { InputStream is; int __t__ = 1; int __f__ = 0; int __FILE_DEBUG_FLAG__ = __f__; String __DEBUG_FILE_NAME__ = "src/D1"; FastScanner in; PrintWriter out; int MOD = 1000000007; public void solve() { int N = in.nextInt(); int[] a = in.nextIntArray(N); int[] cnt = new int[33]; int xor = 0; for (int i = 0; i < N; i++) { int d = Integer.bitCount(a[i] ^ (a[i] - 1)); cnt[d]++; xor ^= a[i]; } int res = 0; for (int i = cnt.length - 1; i > 0; i--) { if ((xor & (1L << (i - 1))) != 0) { if (cnt[i] == 0) { System.out.println(-1); return; } else { xor ^= (1L << i) - 1; res++; } } } System.out.println(res); } long MULT(long x, long y) { return (x * y) % MOD; } long POW(long a, long p) { long res = 1; long val = a; while (p > 0) { if (p % 2 == 1) { res = MULT(res, val); } p >>= 1; val = MULT(val, val); } return res; } public void run() { if (__FILE_DEBUG_FLAG__ == __t__) { try { is = new FileInputStream(__DEBUG_FILE_NAME__); } catch (FileNotFoundException e) { // TODO 自動生成された catch ブロック e.printStackTrace(); } System.out.println("FILE_INPUT!"); } else { is = System.in; } in = new FastScanner(is); out = new PrintWriter(System.out); solve(); } public static void main(final String[] args) { new Main().run(); } class FastScanner { private InputStream stream; private byte[] buf = new byte[1024]; private int curChar; private int numChars; public FastScanner(InputStream stream) { this.stream = stream; // stream = new FileInputStream(new File("dec.in")); } int read() { if (numChars == -1) throw new InputMismatchException(); if (curChar >= numChars) { curChar = 0; try { numChars = stream.read(buf); } catch (IOException e) { throw new InputMismatchException(); } if (numChars <= 0) return -1; } return buf[curChar++]; } boolean isSpaceChar(int c) { return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1; } boolean isEndline(int c) { return c == '\n' || c == '\r' || c == -1; } int nextInt() { return Integer.parseInt(next()); } int[] nextIntArray(int n) { int[] array = new int[n]; for (int i = 0; i < n; i++) array[i] = nextInt(); return array; } int[][] nextIntMap(int n, int m) { int[][] map = new int[n][m]; for (int i = 0; i < n; i++) { map[i] = in.nextIntArray(m); } return map; } long nextLong() { return Long.parseLong(next()); } long[] nextLongArray(int n) { long[] array = new long[n]; for (int i = 0; i < n; i++) array[i] = nextLong(); return array; } long[][] nextLongMap(int n, int m) { long[][] map = new long[n][m]; for (int i = 0; i < n; i++) { map[i] = in.nextLongArray(m); } return map; } double nextDouble() { return Double.parseDouble(next()); } double[] nextDoubleArray(int n) { double[] array = new double[n]; for (int i = 0; i < n; i++) array[i] = nextDouble(); return array; } double[][] nextDoubleMap(int n, int m) { double[][] map = new double[n][m]; for (int i = 0; i < n; i++) { map[i] = in.nextDoubleArray(m); } return map; } String next() { int c = read(); while (isSpaceChar(c)) c = read(); StringBuilder res = new StringBuilder(); do { res.appendCodePoint(c); c = read(); } while (!isSpaceChar(c)); return res.toString(); } String[] nextStringArray(int n) { String[] array = new String[n]; for (int i = 0; i < n; i++) array[i] = next(); return array; } String nextLine() { int c = read(); while (isEndline(c)) c = read(); StringBuilder res = new StringBuilder(); do { res.appendCodePoint(c); c = read(); } while (!isEndline(c)); return res.toString(); } } }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | hiro116s |
Language | Java8 (OpenJDK 1.8.0) |
Score | 500 |
Code Size | 5724 Byte |
Status | AC |
Exec Time | 160 ms |
Memory | 38736 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 500 / 500 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | example0.txt, example1.txt |
All | 000.txt, 001.txt, 002.txt, 003.txt, 004.txt, 005.txt, 006.txt, 007.txt, 008.txt, 009.txt, 010.txt, 011.txt, 012.txt, 013.txt, 014.txt, 015.txt, 016.txt, 017.txt, 018.txt, 019.txt, 020.txt, 021.txt, 022.txt, 023.txt, example0.txt, example1.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
000.txt | AC | 70 ms | 22356 KB |
001.txt | AC | 68 ms | 19412 KB |
002.txt | AC | 137 ms | 35256 KB |
003.txt | AC | 120 ms | 29976 KB |
004.txt | AC | 128 ms | 27608 KB |
005.txt | AC | 119 ms | 26516 KB |
006.txt | AC | 136 ms | 35988 KB |
007.txt | AC | 159 ms | 36020 KB |
008.txt | AC | 137 ms | 38736 KB |
009.txt | AC | 137 ms | 38616 KB |
010.txt | AC | 135 ms | 34840 KB |
011.txt | AC | 137 ms | 35160 KB |
012.txt | AC | 134 ms | 37520 KB |
013.txt | AC | 135 ms | 33808 KB |
014.txt | AC | 138 ms | 36756 KB |
015.txt | AC | 137 ms | 36756 KB |
016.txt | AC | 135 ms | 37432 KB |
017.txt | AC | 134 ms | 35732 KB |
018.txt | AC | 160 ms | 37620 KB |
019.txt | AC | 141 ms | 37328 KB |
020.txt | AC | 136 ms | 35640 KB |
021.txt | AC | 92 ms | 22484 KB |
022.txt | AC | 99 ms | 25388 KB |
023.txt | AC | 144 ms | 36072 KB |
example0.txt | AC | 67 ms | 18644 KB |
example1.txt | AC | 68 ms | 20564 KB |