diff --git "a/2209040041/chapter_1/lc_1\346\211\200\346\234\211\345\245\207\346\225\260\351\225\277\345\272\246\345\255\220\346\225\260\347\273\204\347\232\204\345\222\214.cpp" "b/2209040041/chapter_1/lc_1\346\211\200\346\234\211\345\245\207\346\225\260\351\225\277\345\272\246\345\255\220\346\225\260\347\273\204\347\232\204\345\222\214.cpp"
deleted file mode 100644
index aff7219a740cbfe490e2d98737022ff730149eca..0000000000000000000000000000000000000000
--- "a/2209040041/chapter_1/lc_1\346\211\200\346\234\211\345\245\207\346\225\260\351\225\277\345\272\246\345\255\220\346\225\260\347\273\204\347\232\204\345\222\214.cpp"
+++ /dev/null
@@ -1,24 +0,0 @@
-int arrSum(int* arr, int start, int end){
-	int i, res = 0;
-	for(i = start; i < start + end; i++)
-	{
-		res += arr[i];
-	}
-	
-	return res;
-}
-int sumOddLengthSubarrays(int* arr, int arrSize){
-    int i = 0;
-    int j = 0;
-    int k = 0;
-    int ans = 0;
-
-    for(i = 1; i <= arrSize; i += 2){
-        for(j = 0; j < i; j += i){
-            for(k = j; k < arrSize - i + 1;k++){
-                ans += arrSum(arr, k ,i);
-            }
-        }
-    }
-    return ans;
-}
\ No newline at end of file
diff --git "a/2209040047/chap1/\344\270\244\346\225\260\344\271\213\345\222\214.cpp" "b/2209040047/chap1/\344\270\244\346\225\260\344\271\213\345\222\214.cpp"
new file mode 100644
index 0000000000000000000000000000000000000000..b2970706e508d578b0321bea2c6d8f740cc5de90
--- /dev/null
+++ "b/2209040047/chap1/\344\270\244\346\225\260\344\271\213\345\222\214.cpp"
@@ -0,0 +1,6 @@
+#include <stdio.h>
+int main()
+{
+    printf("HELLO WORLD");
+    return 0;
+}
\ No newline at end of file
diff --git "a/2209040079/chapter 1/lc \344\270\244\346\225\260\344\271\213\345\222\214.cpp" "b/2209040079/chapter 1/lc \344\270\244\346\225\260\344\271\213\345\222\214.cpp"
deleted file mode 100644
index 18918d6b5fe727cc5bc6f0e3e3fd371f5766974b..0000000000000000000000000000000000000000
--- "a/2209040079/chapter 1/lc \344\270\244\346\225\260\344\271\213\345\222\214.cpp"	
+++ /dev/null
@@ -1,14 +0,0 @@
-class Solution {
-public:
-   vector<int> twoSum(vector<int>& nums, int target) {
-    unordered_map<int, int> hash;
-    for (int i = 0; i < nums.size(); ++i)
-    {
-        if (hash.find(target - nums[i]) != hash.end())
-            return { hash[target - nums[i]],i };
-        else
-            hash[nums[i]] = i;
-    }
-    return {};
-}
-};
\ No newline at end of file