Submission #8550461

---

Source Code Expand

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using static System.Console;
using static System.Math;
using static MyIO;
using static MyUtil;

public class C
{
	public static void Main() => (new Solver()).Solve();
}


public class Solver
{
	public void Solve()
	{
		string S = GetString();

		var good = new Regex(@"o+ookayama", RegexOptions.Compiled);
		var small = new Regex("oo", RegexOptions.Compiled);
		var capital = new Regex("OO", RegexOptions.Compiled);

		int state = 1;
		string T = "";
		int iT = -1;
		while(true)
		{
			switch(state)
			{
				case 1:
					var matches = good.Matches(S);
					if(matches.Count == 0)
					{
						WriteLine(S);
						return;
					}
					int max = 0;
					foreach(Match match in matches)
					{
						if(match.Length > max)
						{
							max = match.Length;
							T = match.Value;
							iT = match.Index;
						}						
					}
					state = 3;
					break;

				case 3:
					if(T.IndexOf("oo") != -1)
					{
						string U = small.Replace(T, "O", 1);
						var regex = new Regex(T);
						S = regex.Replace(S, U, 1, iT);
						T = U;
						state = 4;
					}
					else
					{
						state = 1;						
					}
					break;

				case 4:
					if(T.IndexOf("OO") != -1)
					{
						string U = capital.Replace(T, "o", 1);
						var regex = new Regex(T);
						S = regex.Replace(S, U, 1, iT);
						T = U;
					}
					state = 3;
					break;
			}
		}
	}
}

public static class MyIO
{
	private static string[] args = null;
	private static int num = -1;
	private static int used = -1;

	private static string getArg()
	{
		if(used == num)
		{
			args = Console.ReadLine().Split(' ');
			num = args.Length;
			used = 0;
		}
		return args[used++];
	}

	public static int GetInt() => int.Parse(getArg());
	public static long GetLong() => long.Parse(getArg());
	public static double GetDouble() => double.Parse(getArg());
	public static string GetString() => getArg();
	public static char GetChar() => getArg()[0];
	public static int[] GetInts(int N) => Enumerable.Range(0, N).Select(_ => GetInt()).ToArray();
	public static long[] GetLongs(int N) => Enumerable.Range(0, N).Select(_ => GetLong()).ToArray();
	public static double[] GetDoubles(int N) => Enumerable.Range(0, N).Select(_ => GetDouble()).ToArray();
	public static string[] GetStrings(int N) => Enumerable.Range(0, N).Select(_ => GetString()).ToArray();
}

public static class MyUtil
{
	public static void chmax<T>(ref T x, T y) where T : IComparable<T>
	{
		if(x.CompareTo(y) < 0)
			x = y;
	}

	public static void chmin<T>(ref T x, T y) where T : IComparable<T>
	{
		if(x.CompareTo(y) > 0)
			x = y;
	}

	public static void swap<T>(ref T x, ref T y)
	{
		T tmp = x;
		x = y;
		y = tmp;
	}
}

Submission Info

Judge Result