Problem: Pavel loves grid mazes. A grid maze is an n × m rectangle maze where each cell is either empty, or is a wall. You can go from one cell to another only if both cells are empty and have a common side.

Pavel drew a grid maze with all empty cells forming a connected area. That is, you can go from any empty cell to any other one. Pavel doesn't like it when his maze has too little walls. He wants to turn exactly k empty cells into walls so that all the remaining cells still formed a connected area. Help him.

Input

The first line contains three integers n, m, k (1 ≤ n, m ≤ 500, 0 ≤ k < s), where n and m are the maze's height and width, correspondingly, k is the number of walls Pavel wants to add and letter s represents the number of empty cells in the original maze.

Each of the next n lines contains m characters. They describe the original maze. If a character on a line equals ".", then the corresponding cell is empty and if the character equals "#", then the cell is a wall.

Output

Print n lines containing m characters each: the new maze that fits Pavel's requirements. Mark the empty cells that you transformed into walls as "X", the other cells must be left without changes (that is, "." and "#").

It is guaranteed that a solution exists. If there are multiple solutions you can output any of them.

Examples

Input

3 4 2
#..#
..#.
#...


Output

#.X#
X.#.
#...


Input

5 4 5
#...
#.#.
.#..
...#
.#.#


Output

#XXX
#X#.
X#..
...#
.#.#

Solution (in JAVA):

Solution:
//package com.a2onlinejudge.ladder.CodeforcesDiv2C;

import java.io.*;
import java.util.ArrayList;
import java.util.InputMismatchException;
import java.util.Iterator;
import java.util.List;

/**
 * Created by rahulkhairwar on 23/06/16.
 */
public class Maze
{
	public static void main(String[] args)
	{
		InputReader in = new InputReader(System.in);
		OutputWriter out = new OutputWriter(System.out);

		Solver solver = new Solver(in, out);

		solver.solve(1);

		out.flush();

		in.close();
		out.close();
	}

	static class Solver
	{
		int n, m, k, currTime;
		Cell[][] maze;
		Node[] nodes;
		InputReader in;
		OutputWriter out;

		void solve(int testNumber)
		{
			n = in.nextInt();
			m = in.nextInt();
			k = in.nextInt();

			maze = new Cell[n][m];
			nodes = new Node[n * m];
			int counter = 0;
			int nodesCount = 0;

			for (int i = 0; i < n; i++)
			{
				for (int j = 0; j < m; j++)
				{
					char ch;

					while (in.isSpaceChar(ch = (char) in.read()))
						;

					if (ch == '.')
					{
						nodes[nodesCount] = new Node(nodesCount, i, j);
						maze[i][j] = new Cell(counter++, nodesCount++, ch);
						connect(i, j);
					}
					else
						maze[i][j] = new Cell(counter++, -1, ch);
				}
			}

/*			dfs(0);

			for (int i = 0; i < nodesCount; i++)
			{
				if (!nodes[i].isArticulationPoint)
				{
					int row, column;

					row = nodes[i].row;
					column = nodes[i].column;

					maze[row][column].ch = 'X';
					k--;

					if (k == 0)
						break;
				}
			}*/

			dfs2(0);

			for (int i = 0; i < nodesCount; i++)
			{
				if (nodes[i].delete)
				{
					int row, column;

					row = nodes[i].row;
					column = nodes[i].column;
//					System.out.println("building wall at row : " + nodes[i].row + ", column : " + nodes[i].column);

					maze[row][column].ch = 'X';
				}
			}

			for (int i = 0; i < n; i++, out.println())
				for (int j = 0; j < m; j++)
					out.print(maze[i][j].ch);
		}

		void connect(int row, int column)
		{
			if (row > 0)
			{
				if (maze[row - 1][column].isEmpty)
				{
					int nodeIndex, upperNodeIndex;

					nodeIndex = maze[row][column].nodeIndex;
					upperNodeIndex = maze[row - 1][column].nodeIndex;

					nodes[nodeIndex].adj.add(upperNodeIndex);
					nodes[upperNodeIndex].adj.add(nodeIndex);
				}
			}

			if (column > 0)
			{
				if (maze[row][column - 1].isEmpty)
				{
					int nodeIndex, leftNodeIndex;

					nodeIndex = maze[row][column].nodeIndex;
					leftNodeIndex = maze[row][column - 1].nodeIndex;

					nodes[nodeIndex].adj.add(leftNodeIndex);
					nodes[leftNodeIndex].adj.add(nodeIndex);
				}
			}
		}

		void dfs(int node)
		{
			if (nodes[node].visited)
				return;

			Node temp = nodes[node];
			boolean isArticulationPoint = false;

			temp.visited = true;
			temp.visitingTime = temp.low = currTime++;

			Iterator<Integer> iterator = temp.adj.iterator();

			while (iterator.hasNext())
			{
				int curr = iterator.next();

				if (!nodes[curr].visited)
				{
					nodes[curr].parent = node;

					dfs(curr);

					temp.low = Math.min(temp.low, nodes[curr].low);

					if (temp.visitingTime <= nodes[curr].low)
						isArticulationPoint = true;
				}
				else if (curr != temp.parent)
					temp.low = Math.min(temp.low, nodes[curr].visitingTime);
			}

			temp.isArticulationPoint = isArticulationPoint;
		}

		void dfs2(int node)
		{
			Node temp = nodes[node];

			if (temp.visited)
				return;

			temp.visited = true;

			Iterator<Integer> iterator = temp.adj.iterator();
			boolean entered, allChildrenDeleted;

			entered = false;
			allChildrenDeleted = true;

			while (iterator.hasNext())
			{
				int curr = iterator.next();

				if (curr == temp.parent)
					continue;

				if (!nodes[curr].visited)
				{
					entered = true;
					nodes[curr].parent = node;
					dfs2(curr);

					if (!nodes[curr].delete)
						allChildrenDeleted = false;
				}
			}

			if ((!entered && k > 0) || (allChildrenDeleted && k > 0))
			{
				temp.delete = true;
				k--;
			}
		}

		public class Cell
		{
			int index, nodeIndex;
			char ch;
			boolean isEmpty;

			public Cell(int index, int nodeNumber, char ch)
			{
				this.index = index;
				this.nodeIndex = nodeNumber;
				this.ch = ch;
				isEmpty = (ch == '.');
			}

		}

		class Node
		{
			int parent, visitingTime, low;
			int index, row, column;
			List<Integer> adj;
			boolean visited, isArticulationPoint, delete;

			public Node(int index, int row, int column)
			{
				this.index = index;
				this.row = row;
				this.column = column;
				adj = new ArrayList<>();
			}

		}

		public Solver(InputReader in, OutputWriter out)
		{
			this.in = in;
			this.out = out;
		}

	}

	static class InputReader
	{
		private InputStream stream;
		private byte[] buf = new byte[1024];
		private int curChar;
		private int numChars;

		public InputReader(InputStream stream)
		{
			this.stream = stream;
		}

		public 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++];
		}

		public int nextInt()
		{
			int c = read();

			while (isSpaceChar(c))
				c = read();

			int sgn = 1;

			if (c == '-')
			{
				sgn = -1;
				c = read();
			}

			int res = 0;

			do
			{
				if (c < '0' || c > '9')
					throw new InputMismatchException();

				res *= 10;
				res += c & 15;

				c = read();
			} while (!isSpaceChar(c));

			return res * sgn;
		}

		public int[] nextIntArray(int arraySize)
		{
			int array[] = new int[arraySize];

			for (int i = 0; i < arraySize; i++)
				array[i] = nextInt();

			return array;
		}

		public long nextLong()
		{
			int c = read();

			while (isSpaceChar(c))
				c = read();

			int sign = 1;

			if (c == '-')
			{
				sign = -1;

				c = read();
			}

			long result = 0;

			do
			{
				if (c < '0' || c > '9')
					throw new InputMismatchException();

				result *= 10;
				result += c & 15;

				c = read();
			} while (!isSpaceChar(c));

			return result * sign;
		}

		public long[] nextLongArray(int arraySize)
		{
			long array[] = new long[arraySize];

			for (int i = 0; i < arraySize; i++)
				array[i] = nextLong();

			return array;
		}

		public float nextFloat() // problematic
		{
			float result, div;
			byte c;

			result = 0;
			div = 1;
			c = (byte) read();

			while (c <= ' ')
				c = (byte) read();

			boolean isNegative = (c == '-');

			if (isNegative)
				c = (byte) read();

			do
			{
				result = result * 10 + c - '0';
			} while ((c = (byte) read()) >= '0' && c <= '9');

			if (c == '.')
				while ((c = (byte) read()) >= '0' && c <= '9')
					result += (c - '0') / (div *= 10);

			if (isNegative)
				return -result;

			return result;
		}

		public double nextDouble() // not completely accurate
		{
			double ret = 0, div = 1;
			byte c = (byte) read();

			while (c <= ' ')
				c = (byte) read();

			boolean neg = (c == '-');

			if (neg)
				c = (byte) read();

			do
			{
				ret = ret * 10 + c - '0';
			} while ((c = (byte) read()) >= '0' && c <= '9');

			if (c == '.')
				while ((c = (byte) read()) >= '0' && c <= '9')
					ret += (c - '0') / (div *= 10);

			if (neg)
				return -ret;

			return ret;
		}

		public 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();
		}

		public boolean isSpaceChar(int c)
		{
			return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
		}

		public String nextLine()
		{
			int c = read();

			StringBuilder result = new StringBuilder();

			do
			{
				result.appendCodePoint(c);

				c = read();
			} while (!isNewLine(c));

			return result.toString();
		}

		public boolean isNewLine(int c)
		{
			return c == '\n';
		}

		public void close()
		{
			try
			{
				stream.close();
			}
			catch (IOException e)
			{
				e.printStackTrace();
			}
		}

	}

	static class OutputWriter
	{
		private PrintWriter writer;

		public OutputWriter(OutputStream stream)
		{
			writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(
					stream)));
		}

		public OutputWriter(Writer writer)
		{
			this.writer = new PrintWriter(writer);
		}

		public void println(int x)
		{
			writer.println(x);
		}

		public void print(int x)
		{
			writer.print(x);
		}

		public void print(char x)
		{
			writer.print(x);
		}

		public void println(int array[], int size)
		{
			for (int i = 0; i < size; i++)
				println(array[i]);
		}

		public void print(int array[], int size)
		{
			for (int i = 0; i < size; i++)
				print(array[i] + " ");
		}

		public void println(long x)
		{
			writer.println(x);
		}

		public void print(long x)
		{
			writer.print(x);
		}

		public void println(long array[], int size)
		{
			for (int i = 0; i < size; i++)
				println(array[i]);
		}

		public void print(long array[], int size)
		{
			for (int i = 0; i < size; i++)
				print(array[i]);
		}

		public void println(float num)
		{
			writer.println(num);
		}

		public void print(float num)
		{
			writer.print(num);
		}

		public void println(double num)
		{
			writer.println(num);
		}

		public void print(double num)
		{
			writer.print(num);
		}

		public void println(String s)
		{
			writer.println(s);
		}

		public void print(String s)
		{
			writer.print(s);
		}

		public void println()
		{
			writer.println();
		}

		public void printSpace()
		{
			writer.print(" ");
		}

		public void flush()
		{
			writer.flush();
		}

		public void close()
		{
			writer.close();
		}

	}

	static class CMath
	{
		static long power(long number, long power)
		{
			if (number == 1 || number == 0 || power == 0)
				return 1;

			if (power == 1)
				return number;

			if (power % 2 == 0)
				return power(number * number, power / 2);
			else
				return power(number * number, power / 2) * number;
		}

		static long modPower(long number, long power, long mod)
		{
			if (number == 1 || number == 0 || power == 0)
				return 1;

			number = mod(number, mod);

			if (power == 1)
				return number;

			long square = mod(number * number, mod);

			if (power % 2 == 0)
				return modPower(square, power / 2, mod);
			else
				return mod(modPower(square, power / 2, mod) * number, mod);
		}

		static long moduloInverse(long number, long mod)
		{
			return modPower(number, mod - 2, mod);
		}

		static long mod(long number, long mod)
		{
			return number - (number / mod) * mod;
		}

		static int gcd(int a, int b)
		{
			if (b == 0)
				return a;
			else
				return gcd(b, a % b);
		}

	}

}