diff --git a/Algorithm.sln b/Algorithm.sln
index 68c84ca..a8fca0d 100644
--- a/Algorithm.sln
+++ b/Algorithm.sln
@@ -36,6 +36,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Lake_Counting_POJ2386-DFS",
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "迷宫最短路径-BFS", "迷宫最短路径-BFS\迷宫最短路径-BFS.vcxproj", "{3E14D7A9-4C77-4126-B9FB-99429AC9FD8A}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "双色地砖行走_POJ1979-BFS_DFS", "双色地砖行走_POJ1979-BFS_DFS\双色地砖行走_POJ1979-BFS_DFS.vcxproj", "{B6A8E036-6E8B-49E3-9E3F-63035F29564D}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|x64 = Debug|x64
@@ -148,6 +150,14 @@ Global
 		{3E14D7A9-4C77-4126-B9FB-99429AC9FD8A}.Release|x64.Build.0 = Release|x64
 		{3E14D7A9-4C77-4126-B9FB-99429AC9FD8A}.Release|x86.ActiveCfg = Release|Win32
 		{3E14D7A9-4C77-4126-B9FB-99429AC9FD8A}.Release|x86.Build.0 = Release|Win32
+		{B6A8E036-6E8B-49E3-9E3F-63035F29564D}.Debug|x64.ActiveCfg = Debug|x64
+		{B6A8E036-6E8B-49E3-9E3F-63035F29564D}.Debug|x64.Build.0 = Debug|x64
+		{B6A8E036-6E8B-49E3-9E3F-63035F29564D}.Debug|x86.ActiveCfg = Debug|Win32
+		{B6A8E036-6E8B-49E3-9E3F-63035F29564D}.Debug|x86.Build.0 = Debug|Win32
+		{B6A8E036-6E8B-49E3-9E3F-63035F29564D}.Release|x64.ActiveCfg = Release|x64
+		{B6A8E036-6E8B-49E3-9E3F-63035F29564D}.Release|x64.Build.0 = Release|x64
+		{B6A8E036-6E8B-49E3-9E3F-63035F29564D}.Release|x86.ActiveCfg = Release|Win32
+		{B6A8E036-6E8B-49E3-9E3F-63035F29564D}.Release|x86.Build.0 = Release|Win32
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/Readme.md b/Readme.md
index c4c3561..06abbba 100644
--- a/Readme.md
+++ b/Readme.md
@@ -8,6 +8,7 @@
 |���Ŷ���������-DP||
 |���������������-DP||
 |Lake_Counting_POJ2386-DFS|��ά�ַ����飬һ��W��Χ8���ռ���W��������Ϊһ��ˮ�ӣ���ˮ�Ӽ�����|
+|˫ɫ��ש����_POJ1979-BFS_DFS|��ά�ַ����飬������˫ɫ�ĵ�ש��һ������������ֻ����һ����ɫ����һ�������߶��ٿ��ש��ʹ��BFS��DFS���ɡ�|
 |Eight_Puzzle-BFS||
 |�Թ����·��-BFS|��һ���Թ������㵽�յ������߶��ٲ�|
 |Nqueens-�ֲ���������||
diff --git "a/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS/BFS.cpp" "b/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS/BFS.cpp"
new file mode 100644
index 0000000..79ea7f7
--- /dev/null
+++ "b/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS/BFS.cpp"
@@ -0,0 +1,44 @@
+#include<iostream>
+#include<queue>
+
+using namespace std;
+
+extern int W, H;
+extern char room[20][21];
+extern int sx, sy;
+extern bool arrive[20][20];
+extern int dx[4], dy[4];
+
+typedef pair<int, int> P;
+int BFS()
+{
+	queue<P> que;
+	for (int i = 0; i < H; i++)
+		for (int j = 0; j < W; j++)
+			arrive[i][j] = false;
+	arrive[sx][sy] = true;
+	que.push(P(sx, sy));
+	int ans = 1;
+
+	while (que.size())
+	{
+		P p = que.front();
+		que.pop();
+
+		for (int i = 0; i < 4; i++)
+		{
+			int nx = p.first + dx[i];
+			int ny = p.second + dy[i];
+
+			if (nx >= 0 && nx < H && ny >= 0 && ny < W && room[nx][ny] != '#' && arrive[nx][ny] == false)
+			{
+				que.push(P(nx, ny));
+				arrive[nx][ny] = true;
+				ans++;
+			}
+		}
+	}
+
+	return ans;
+}
+
diff --git "a/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS/DFS.cpp" "b/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS/DFS.cpp"
new file mode 100644
index 0000000..0b11063
--- /dev/null
+++ "b/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS/DFS.cpp"
@@ -0,0 +1,43 @@
+#include<iostream>
+#include<stack>
+
+using namespace std;
+
+extern int W, H;
+extern char room[20][21];
+extern int sx, sy;
+extern bool arrive[20][20];
+extern int dx[4], dy[4];
+
+typedef pair<int, int> P;
+int DFS()
+{
+	stack<P> sta;
+	for (int i = 0; i < H; i++)
+		for (int j = 0; j < W; j++)
+			arrive[i][j] = false;
+	arrive[sx][sy] = true;
+	sta.push(P(sx, sy));
+	int ans = 1;
+
+	while (sta.size())
+	{
+		P p = sta.top();
+		sta.pop();
+
+		for (int i = 0; i < 4; i++)
+		{
+			int nx = p.first + dx[i];
+			int ny = p.second + dy[i];
+
+			if (nx >= 0 && nx < H && ny >= 0 && ny < W && room[nx][ny] != '#' && arrive[nx][ny] == false)
+			{
+				sta.push(P(nx, ny));
+				arrive[nx][ny] = true;
+				ans++;
+			}
+		}
+	}
+
+	return ans;
+}
\ No newline at end of file
diff --git "a/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS/main.cpp" "b/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS/main.cpp"
new file mode 100644
index 0000000..2052316
--- /dev/null
+++ "b/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS/main.cpp"
@@ -0,0 +1,42 @@
+#include<iostream>
+#include<queue>
+#include<stack>
+
+using namespace std;
+
+int W, H;
+char room[20][21];
+int sx, sy;
+bool arrive[20][20];
+int dx[4] = { 1, 0, -1, 0 }, dy[4] = { 0, 1, 0, -1 };
+
+int BFS();
+int DFS();
+
+int main()
+{
+	while (true)
+	{
+		cin >> W >> H;
+		if (W == 0 && H == 0)
+			break;
+
+		for (int i = 0; i < H; i++)
+			for (int j = 0; j < W; j++)
+			{
+				cin >> room[i][j];
+				if (room[i][j] == '@')
+				{
+					sx = i;
+					sy = j;
+				}
+			}
+		 
+		//int ans = BFS();
+		int ans = DFS();
+		cout << ans << endl;
+	}
+	
+	return 0;
+}
+
diff --git "a/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS.vcxproj" "b/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS.vcxproj"
new file mode 100644
index 0000000..a567cba
--- /dev/null
+++ "b/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS.vcxproj"
@@ -0,0 +1,136 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>16.0</VCProjectVersion>
+    <ProjectGuid>{B6A8E036-6E8B-49E3-9E3F-63035F29564D}</ProjectGuid>
+    <RootNamespace>双色地砖行走POJ1979BFSDFS</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v142</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v142</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v142</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v142</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup />
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <SDLCheck>true</SDLCheck>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <SDLCheck>true</SDLCheck>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="BFS.cpp" />
+    <ClCompile Include="DFS.cpp" />
+    <ClCompile Include="main.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="问题.md" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git "a/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS.vcxproj.filters" "b/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS.vcxproj.filters"
new file mode 100644
index 0000000..30238b3
--- /dev/null
+++ "b/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS.vcxproj.filters"
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="BFS.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+    <ClCompile Include="DFS.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+    <ClCompile Include="main.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="问题.md" />
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git "a/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS/\351\227\256\351\242\230.md" "b/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS/\351\227\256\351\242\230.md"
new file mode 100644
index 0000000..5f2c02a
--- /dev/null
+++ "b/\345\217\214\350\211\262\345\234\260\347\240\226\350\241\214\350\265\260_POJ1979-BFS_DFS/\351\227\256\351\242\230.md"
@@ -0,0 +1,78 @@
+# Red and Black POJ 1979
+
+http://poj.org/problem?id=1979
+
+### Description
+
+There is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a black tile. From a tile, he can move to one of four adjacent tiles. But he can't move on red tiles, he can move only on black tiles.
+
+Write a program to count the number of black tiles which he can reach by repeating the moves described above.
+
+### 解题方法
+
+BFS和DFS均可
+
+### Input
+
+The input consists of multiple data sets. A data set starts with a line containing two positive integers W and H; W and H are the numbers of tiles in the x- and y- directions, respectively. W and H are not more than 20.
+
+There are H more lines in the data set, each of which includes W characters. Each character represents the color of a tile as follows.
+
+'.' - a black tile
+'#' - a red tile
+'@' - a man on a black tile(appears exactly once in a data set)
+The end of the input is indicated by a line consisting of two zeros.
+
+### Output
+
+For each data set, your program should output a line which contains the number of tiles he can reach from the initial tile (including itself).
+
+### Sample Input
+
+```
+6 9
+....#.
+.....#
+......
+......
+......
+......
+......
+#@...#
+.#..#.
+11 9
+.#.........
+.#.#######.
+.#.#.....#.
+.#.#.###.#.
+.#.#..@#.#.
+.#.#####.#.
+.#.......#.
+.#########.
+...........
+11 6
+..#..#..#..
+..#..#..#..
+..#..#..###
+..#..#..#@.
+..#..#..#..
+..#..#..#..
+7 7
+..#.#..
+..#.#..
+###.###
+...@...
+###.###
+..#.#..
+..#.#..
+0 0
+```
+
+### Sample Output
+
+```
+45
+59
+6
+13
+```
\ No newline at end of file