diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a94212f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,9 @@
+################################################################################
+# 此 .gitignore 文件已由 Microsoft(R) Visual Studio 自动创建。
+################################################################################
+
+*.suo
+*.db
+*.opendb
+*.json
+*.sqlite
diff --git a/LeafScar/expressive_words/expressive_words.cpp b/LeafScar/expressive_words/expressive_words.cpp
new file mode 100644
index 0000000..8d82840
--- /dev/null
+++ b/LeafScar/expressive_words/expressive_words.cpp
@@ -0,0 +1,48 @@
+#include <vector>
+
+using namespace std;
+
+class Solution {
+public:
+	int expressiveWords(string S, std::vector<string>& words) {
+		int num = 0;
+		for (int i = 0; i < words.size(); ++i)
+		{
+			if (expressiveWord(S, words[i]))
+				num++;
+		}
+		return num;
+	}
+
+	bool expressiveWord(string s, string t)
+	{
+		int s_i = 0;
+		int t_i = 0;
+
+		while (s_i < s.length() && t_i < t.length())
+		{
+			if (s[s_i] != t[t_i])
+				return false;
+
+			int s_flag = 0;
+			while (s[s_i] == t[t_i])
+			{
+				s_i++;
+				s_flag++;
+			}
+
+			int t_flag = 0;
+			while (s[s_i - 1] == t[t_i])
+			{
+				t_flag++;
+				t_i++;
+			}
+
+			if (t_flag == s_flag  || (s_flag >= 3 && t_flag <= s_flag))
+				continue;
+
+			return false;
+		}
+		return s_i == s.length() && t_i == t.length();
+	}
+};
diff --git a/LeafScar/expressive_words/file.png b/LeafScar/expressive_words/file.png
new file mode 100644
index 0000000..b28dcca
Binary files /dev/null and b/LeafScar/expressive_words/file.png differ
diff --git a/LeafScar/expressive_words/readme.md b/LeafScar/expressive_words/readme.md
new file mode 100644
index 0000000..88a7245
--- /dev/null
+++ b/LeafScar/expressive_words/readme.md
@@ -0,0 +1,93 @@
+# LeetCode 809¡ª¡ªÇé¸Ð·á¸»µÄÎÄ×Ö
+### 퉀+&emsp;&emsp;ÓÐʱºòÈËÃÇ»áÓöîÍâµÄ×ÖĸÀ´±íʾ¶îÍâµÄÇé¸Ð£¬±ÈÈç "hello" -> "heeellooo", "hi" -> "hiii"¡£ÎÒÃǽ«Á¬ÐøµÄÏàͬµÄ×Öĸ·Ö×飬²¢ÇÒÏàÁÚ×éµÄ×Öĸ¶¼²»Ïàͬ¡£ÎÒÃǽ«Ò»¸öÓµÓÐÈý¸ö»òÒÔÉÏ×ÖĸµÄ×鶨ÒåΪÀ©ÕÅ״̬£¨extended£©£¬ÈçµÚÒ»¸öÀý×ÓÖÐµÄ "e" ºÍ" o" ÒÔ¼°µÚ¶þ¸öÀý×ÓÖÐµÄ "i"¡£ ´ËÍ⣬"abbcccaaaa" ½«ÓзÖ×é "a" , "bb" , "ccc" , "dddd"£»ÆäÖÐ "ccc" ºÍ "aaaa" ´¦ÓÚÀ©ÕÅ״̬¡£
+
+&emsp;&emsp;¶ÔÓÚÒ»¸ö¸ø¶¨µÄ×Ö·û´® S £¬Èç¹ûÁíÒ»¸öµ¥´ÊÄܹ»Í¨¹ý½«Ò»Ð©×Öĸ×éÀ©ÕÅ´Ó¶øʹÆäºÍ S Ïàͬ£¬ÎÒÃǽ«Õâ¸öµ¥´Ê¶¨ÒåΪ¿ÉÀ©Õŵģ¨stretchy£©¡£ÎÒÃÇÔÊÐíÑ¡ÔñÒ»¸ö×Öĸ×飨Èç°üº¬×Öĸ c £©£¬È»ºóÍùÆäÖÐÌí¼ÓÏàͬµÄ×Öĸ c ʹÆ䳤¶È´ïµ½ 3 »òÒÔÉÏ¡£×¢Ò⣬ÎÒÃDz»Äܽ«Ò»¸öÖ»°üº¬Ò»¸ö×ÖĸµÄ×Öĸ×飬Èç "h"£¬À©Õŵ½Ò»¸ö°üº¬Á½¸ö×ÖĸµÄ×飬Èç "hh"£»ËùÓеÄÀ©ÕűØÐëʹ¸Ã×Öĸ×é±ä³ÉÀ©ÕÅ״̬£¨ÖÁÉÙ°üº¬Èý¸ö×Öĸ£©¡£
+
+&emsp;&emsp;ÊäÈëÒ»×éµ¥´Ê£¬Êä³öÆäÖпÉÀ©Õŵĵ¥´ÊÊýÁ¿¡£
+
+**ʾÀý£º**  
+**ÊäÈ룺**  
+```
+S = "heeellooo"
+words = ["hello", "hi", "helo"]
+```
+**Êä³ö£º** 
+```
+1
+```
+**½âÊÍ£º**  
+ÎÒÃÇÄÜͨ¹ýÀ©ÕÅ"hello"µÄ"e"ºÍ"o"À´µÃµ½"heeellooo"¡£
+ÎÒÃDz»ÄÜͨ¹ýÀ©ÕÅ"helo"À´µÃµ½"heeellooo"ÒòΪ"ll"²»´¦ÓÚÀ©ÕÅ״̬¡£
+
+
+**˵Ã÷£º**
+* 0 <= len(S) <= 100¡£
+* 0 <= len(words) <= 100¡£
+* 0 <= len(words[i]) <= 100¡£
+* S ºÍËùÓÐÔÚ words Öеĵ¥´Ê¶¼Ö»ÓÉСд×Öĸ×é³É¡£
+
+### ˼·
+
+**¶ÔÌâÄ¿µÄÀí½â£º**
+* ²»À©³ä״̬£ºÔ­µ¥´ÊµÄµ¥¸ö×ÖĸÁ¬Ðø³öÏÖ´ÎÊýÓëÀ©³äºóµ¥´Ê¶ÔÓ¦´¦Á¬Ðø³öÏÖ´ÎÊýÏàµÈ
+* À©³ä״̬£ºÔ­µ¥´ÊµÄµ¥¸ö×ÖĸÁ¬Ðø³öÏÖ´ÎÊýÓëÀ©³äºóµ¥´Ê¶ÔÓ¦×Öĸ´¦±È½Ï£¬À©³äºóµ¥´Ê¶ÔÓ¦×ÖĸÁ¬Ðø³öÏÖ´ÎÊý´óÓÚÔ­µ¥´ÊµÄµ¥¸ö×ÖĸÁ¬Ðø³öÏÖ´ÎÊý£¬ÇÒ±ØÐë´óÓÚ3´Î
+
+**ʵÏÖÏë·¨£º**
+
+Ô­µ¥´ÊÓëÀ©³äºóµ¥´Ê˳ÐòɨÃ裬¼Ç¼µ¥¸ö×ÖĸÁ¬Ðø³öÏÖ´ÎÊý£¬·Ö±ð¼ÇΪt_flagÓës_flag£»
+![File](file.png)
+1. Èç¹û˳ÐòɨÃèʱ£¬³öÏÖÀ©³ä×ÖĸÓëÔ­µ¥´Ê×Öĸ²»Í¬£¬Ö±½Ó·µ»Øfalse£»
+2. t_flagµÈÓÚs_flag »òÕß £¨s_flag´óÓÚµÈÓÚ3 ÇÒ s_flagµÄÖµ´óÓÚt_flagµÄÖµ£©²Å½øÐÐÏÂÒ»ÖÖ×ÖĸµÄÅжϣ»
+3. Ö±µ½ÆäÖÐÒ»¸öµ¥´ÊɨÃèÍê½áÊø£¬ÁíÒ»¸öµ¥´Ê»¹Î´É¨ÃèÍ꣬ÄÇÒ»¶¨ÊÇfalse;
+
+**´úÂëʵÏÖ£º**
+```
+bool expressiveWord(string s, string t)
+{
+	int s_i = 0;    // À©³äµ¥´ÊɨÃèµ½µÄϱê
+	int t_i = 0;    // Ô­µ¥´ÊɨÃèµ½µÄϱê
+
+	while (s_i < s.length() && t_i < t.length())
+	{
+		if (s[s_i] != t[t_i])
+			return false;
+
+		int s_flag = 0;
+		while (s[s_i] == t[t_i])    // ¼Ç¼À©³äµ¥´Ê×ÖĸÁ¬ÐøÓóöÏÖ´ÎÊý
+		{
+			s_i++;
+			s_flag++;
+		}
+
+		int t_flag = 0;
+		while (s[s_i - 1] == t[t_i])    // ¼Ç¼ԭµ¥´Ê×ÖĸÁ¬ÐøÓóöÏÖ´ÎÊý
+		{
+			t_flag++;
+			t_i++;
+		}
+
+		if (t_flag == s_flag  || (s_flag >= 3 && t_flag <= s_flag))
+			continue;
+
+		return false;
+	}
+	return s_i == s.length() && t_i == t.length();
+}
+
+// ½ÓÏÂÈ¥¾ÍÊDZéÀúÕû×éµ¥´Ê£¬¼Ç¼Âú×ã·ûºÏ¸ø¶¨À©³äµ¥´ÊµÄÔ­µ¥´ÊµÄÊýÁ¿
+int expressiveWords(string S, std::vector<string>& words) {
+	int num = 0;
+	for (int i = 0; i < words.size(); ++i)
+	{
+		if (expressiveWord(S, words[i]))
+			num++;
+	}
+	return num;
+}
+```
+
+
+
+
+