diff --git a/day1/P5686/P5686 b/day1/P5686/P5686
deleted file mode 100755
index 1844c4f..0000000
Binary files a/day1/P5686/P5686 and /dev/null differ
diff --git a/day1/PreSim/main b/day1/PreSim/main
deleted file mode 100755
index 3392cc6..0000000
Binary files a/day1/PreSim/main and /dev/null differ
diff --git a/day1/U234197/U234197 b/day1/U234197/U234197
deleted file mode 100755
index 2056431..0000000
Binary files a/day1/U234197/U234197 and /dev/null differ
diff --git a/day1/learn/test_cpp_io b/day1/learn/test_cpp_io
deleted file mode 100755
index 332a614..0000000
Binary files a/day1/learn/test_cpp_io and /dev/null differ
diff --git a/day2/P7514/P7514 b/day2/P7514/P7514
deleted file mode 100755
index 6e9e78c..0000000
Binary files a/day2/P7514/P7514 and /dev/null differ
diff --git a/day2/P7514/chat b/day2/P7514/chat
deleted file mode 100755
index 72f6bc1..0000000
Binary files a/day2/P7514/chat and /dev/null differ
diff --git a/day2/U111091/U111091 b/day2/U111091/U111091
deleted file mode 100755
index bb6ce70..0000000
Binary files a/day2/U111091/U111091 and /dev/null differ
diff --git a/day2/U111091/chat b/day2/U111091/chat
deleted file mode 100755
index 0ba0b26..0000000
Binary files a/day2/U111091/chat and /dev/null differ
diff --git a/day2/U111091/tempCodeRunnerFile b/day2/U111091/tempCodeRunnerFile
deleted file mode 100755
index bc7ca98..0000000
Binary files a/day2/U111091/tempCodeRunnerFile and /dev/null differ
diff --git a/day2/U111091/tempCodeRunnerFile.cpp b/day2/U111091/tempCodeRunnerFile.cpp
deleted file mode 100644
index 467ac47..0000000
--- a/day2/U111091/tempCodeRunnerFile.cpp
+++ /dev/null
@@ -1,79 +0,0 @@
-#include<bits/stdc++.h>
-using namespace std;
-#define int long long
-
-const int MAX_N = 10'0000;
-int times;
-
-int x[MAX_N];
-int l[MAX_N];
-int prefix_r[MAX_N];
-int r[MAX_N];
-
-// void debug_array(int array[],size_t size,string name){
-//     cout<<"\n"<<name<<" [";
-//     for(int i=0;i<size;i++){
-//         cout<<array[i]<<(i!=size-1?",":"");
-//     }
-//     cout<<"]\n";
-// }
-
-
-signed main(){
-    cin.sync_with_stdio(false);
-    cin.tie(0);
-
-    cin>>times;
-    for(int t=1;t<=times;t++){
-
-        int n,k,m;
-        cin>>n>>k>>m;
-        for (int i=1; i<=n; i++) {
-            cin>>x[i];
-        }
-
-        string s;
-        cin>>s;
-        int sum=0,cnt=0;
-        vector<int> v;
-        int last0=1;
-        for (int i=2; i<=n; i++) {
-            if(s[i-2]=='0')
-            {
-                int dif=x[i-1]-x[last0];
-                sum+=dif;
-                cnt+=dif/m;
-                v.push_back(dif%m);
-                last0=i;
-            }
-        }
-        int dif=x[n]-x[last0];
-        sum+=dif;
-        cnt+=dif/m;
-        v.push_back(dif%m);
-        sort(v.begin(),v.end(),greater<int>());
-        if(k<=cnt)
-        {
-            sum-=k*m;
-        }
-        else
-        {
-            sum-=cnt*m;
-            k-=cnt;
-            for(int j:v)
-            {
-                if(k==0)
-                {
-                    break;
-                }
-                sum-=min(j,m);
-                k--;
-            }
-        }
-        cout<<sum<<"\n";
-       
-        
-
-    }
-
-}
\ No newline at end of file
diff --git a/day2/U232856/U232856 b/day2/U232856/U232856
deleted file mode 100755
index 8c0030a..0000000
Binary files a/day2/U232856/U232856 and /dev/null differ
diff --git a/day2/U232856/chat b/day2/U232856/chat
deleted file mode 100755
index 179b87e..0000000
Binary files a/day2/U232856/chat and /dev/null differ
diff --git a/day2/U458258/U458258 b/day2/U458258/U458258
deleted file mode 100755
index 1af755a..0000000
Binary files a/day2/U458258/U458258 and /dev/null differ
diff --git a/day2/U458258/chat b/day2/U458258/chat
deleted file mode 100755
index 4db81e0..0000000
Binary files a/day2/U458258/chat and /dev/null differ
diff --git a/day2/review_exam/冒泡排序/main b/day2/review_exam/冒泡排序/main
deleted file mode 100755
index 76f93a4..0000000
Binary files a/day2/review_exam/冒泡排序/main and /dev/null differ
diff --git a/day2/review_exam/冒泡排序/second b/day2/review_exam/冒泡排序/second
deleted file mode 100755
index 8010b52..0000000
Binary files a/day2/review_exam/冒泡排序/second and /dev/null differ
diff --git a/day2/review_exam/插入排序/main b/day2/review_exam/插入排序/main
deleted file mode 100755
index c6809b6..0000000
Binary files a/day2/review_exam/插入排序/main and /dev/null differ
diff --git a/day2/review_exam/插入排序/second b/day2/review_exam/插入排序/second
deleted file mode 100755
index 9d98026..0000000
Binary files a/day2/review_exam/插入排序/second and /dev/null differ
diff --git a/day2/review_exam/选择排序/main b/day2/review_exam/选择排序/main
deleted file mode 100755
index e7a0774..0000000
Binary files a/day2/review_exam/选择排序/main and /dev/null differ
diff --git a/day2/review_exam/选择排序/second b/day2/review_exam/选择排序/second
deleted file mode 100755
index 96efb51..0000000
Binary files a/day2/review_exam/选择排序/second and /dev/null differ
diff --git a/day3/T433080/T433080 b/day3/T433080/T433080
deleted file mode 100755
index e4b1b8e..0000000
Binary files a/day3/T433080/T433080 and /dev/null differ
diff --git a/day3/T433080/small_c b/day3/T433080/small_c
deleted file mode 100755
index 7bcd426..0000000
Binary files a/day3/T433080/small_c and /dev/null differ
diff --git a/day3/T490194/chat b/day3/T490194/chat
deleted file mode 100755
index a84ce9b..0000000
Binary files a/day3/T490194/chat and /dev/null differ
diff --git a/day3/U184510/U184510 b/day3/U184510/U184510
deleted file mode 100755
index 62c889e..0000000
Binary files a/day3/U184510/U184510 and /dev/null differ
diff --git a/day3/U184510/chat b/day3/U184510/chat
deleted file mode 100755
index 3df175f..0000000
Binary files a/day3/U184510/chat and /dev/null differ
diff --git a/day3/U86432/chat b/day3/U86432/chat
deleted file mode 100755
index 0d98b31..0000000
Binary files a/day3/U86432/chat and /dev/null differ
diff --git a/day3/review/main b/day3/review/main
deleted file mode 100755
index 4916d34..0000000
Binary files a/day3/review/main and /dev/null differ
diff --git a/day3/review/冒泡排序 b/day3/review/冒泡排序
deleted file mode 100755
index 2daf599..0000000
Binary files a/day3/review/冒泡排序 and /dev/null differ
diff --git a/day3/review/插入排序 b/day3/review/插入排序
deleted file mode 100755
index a01f158..0000000
Binary files a/day3/review/插入排序 and /dev/null differ
diff --git a/day3/review/选择排序 b/day3/review/选择排序
deleted file mode 100755
index 3d161e4..0000000
Binary files a/day3/review/选择排序 and /dev/null differ