Submission #1939683
Source Code Expand
using System; using System.Linq; using System.Collections.Generic; //using System.Numerics; using Debug = System.Diagnostics.Debug; using SB = System.Text.StringBuilder; using Number = System.Int64; namespace Program { public class Solver { public void Solve() { var n = ri; var sum = 0L; var ans = 0; var a = new SortedSet<long>(); foreach (var x in Enumerate(n, x => ri)) { sum ^= x; a.Add(2 * (x & -x) - 1); } for (int i = 30; i >= 0; i--) if ((sum >> i & 1) == 1 && a.Contains((1L << (i + 1)) - 1)) { ans++; sum ^= (1L << (i + 1)) - 1; } if (sum > 0) Console.WriteLine(-1); else Console.WriteLine(ans); } const long INF = 1L << 60; //int[] dx = { -1, 0, 1, 0 }; //int[] dy = { 0, 1, 0, -1 }; int ri { get { return sc.Integer(); } } long rl { get { return sc.Long(); } } double rd { get { return sc.Double(); } } string rs { get { return sc.Scan(); } } public IO.StreamScanner sc = new IO.StreamScanner(Console.OpenStandardInput()); static T[] Enumerate<T>(int n, Func<int, T> f) { var a = new T[n]; for (int i = 0; i < n; ++i) a[i] = f(i); return a; } static public void Swap<T>(ref T a, ref T b) { var tmp = a; a = b; b = tmp; } } } #region main static class Ex { static public string AsString(this IEnumerable<char> ie) { return new string(ie.ToArray()); } static public string AsJoinedString<T>(this IEnumerable<T> ie, string st = " ") { return string.Join(st, ie.Select(x => x.ToString()).ToArray()); //return string.Join(st, ie); } static public void Main() { Console.SetOut(new Program.IO.Printer(Console.OpenStandardOutput()) { AutoFlush = false }); var solver = new Program.Solver(); solver.Solve(); Console.Out.Flush(); } } #endregion #region Ex namespace Program.IO { using System.IO; using System.Text; using System.Globalization; public class Printer: StreamWriter { public override IFormatProvider FormatProvider { get { return CultureInfo.InvariantCulture; } } public Printer(Stream stream) : base(stream, new UTF8Encoding(false, true)) { } } public class StreamScanner { public StreamScanner(Stream stream) { str = stream; } public readonly Stream str; private readonly byte[] buf = new byte[1024]; private int len, ptr; public bool isEof = false; public bool IsEndOfStream { get { return isEof; } } private byte read() { if (isEof) return 0; if (ptr >= len) { ptr = 0; if ((len = str.Read(buf, 0, 1024)) <= 0) { isEof = true; return 0; } } return buf[ptr++]; } public char Char() { byte b = 0; do b = read(); while ((b < 33 || 126 < b) && !isEof); return (char)b; } public string Scan() { var sb = new StringBuilder(); for (var b = Char(); b >= 33 && b <= 126; b = (char)read()) sb.Append(b); return sb.ToString(); } public string ScanLine() { var sb = new StringBuilder(); for (var b = Char(); b != '\n' && b != 0; b = (char)read()) if (b != '\r') sb.Append(b); return sb.ToString(); } public long Long() { return isEof ? long.MinValue : long.Parse(Scan()); } public int Integer() { return isEof ? int.MinValue : int.Parse(Scan()); } public double Double() { return isEof ? double.NaN : double.Parse(Scan(), CultureInfo.InvariantCulture); } } } #endregion
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | camypaper |
Language | C# (Mono 4.6.2.0) |
Score | 500 |
Code Size | 4268 Byte |
Status | AC |
Exec Time | 85 ms |
Memory | 17748 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 | 24 ms | 9300 KB |
001.txt | AC | 23 ms | 11220 KB |
002.txt | AC | 73 ms | 15584 KB |
003.txt | AC | 48 ms | 17504 KB |
004.txt | AC | 45 ms | 15456 KB |
005.txt | AC | 39 ms | 13280 KB |
006.txt | AC | 85 ms | 15700 KB |
007.txt | AC | 80 ms | 17748 KB |
008.txt | AC | 80 ms | 15584 KB |
009.txt | AC | 83 ms | 17632 KB |
010.txt | AC | 79 ms | 17336 KB |
011.txt | AC | 81 ms | 17632 KB |
012.txt | AC | 78 ms | 15700 KB |
013.txt | AC | 80 ms | 15584 KB |
014.txt | AC | 77 ms | 13536 KB |
015.txt | AC | 77 ms | 15700 KB |
016.txt | AC | 79 ms | 15700 KB |
017.txt | AC | 77 ms | 17336 KB |
018.txt | AC | 77 ms | 15700 KB |
019.txt | AC | 77 ms | 15700 KB |
020.txt | AC | 77 ms | 15584 KB |
021.txt | AC | 28 ms | 11304 KB |
022.txt | AC | 28 ms | 11300 KB |
023.txt | AC | 71 ms | 15700 KB |
example0.txt | AC | 24 ms | 13268 KB |
example1.txt | AC | 22 ms | 9172 KB |