diff --git a/.vscode/launch.json b/.vscode/launch.json
index 25b11b5..9f3f7f1 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -8,8 +8,8 @@
       "args": [],
       "stopAtEntry": false,
       "externalConsole": false,
-      "cwd": "/config/workspace/Luogu/P1540",
-      "program": "/config/workspace/Luogu/P1540/build/Debug/outDebug",
+      "cwd": "/config/workspace/Luogu/P3957",
+      "program": "/config/workspace/Luogu/P3957/build/Debug/outDebug",
       "MIMode": "gdb",
       "miDebuggerPath": "gdb",
       "setupCommands": [
diff --git a/.vscode/settings.json b/.vscode/settings.json
index bfd7745..e210187 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -33,5 +33,6 @@
     "**/.vscode",
     "**/.vscode/**"
   ],
-  "C_Cpp_Runner.useAddressSanitizer": false
+  "C_Cpp_Runner.useAddressSanitizer": false,
+  "cmake.sourceDirectory": "/config/workspace/Cpp/testHTTP/wfrest"
 }
\ No newline at end of file
diff --git a/Cpp/testHTTP/.vscode/c_cpp_properties.json b/Cpp/testHTTP/.vscode/c_cpp_properties.json
new file mode 100644
index 0000000..c2098a2
--- /dev/null
+++ b/Cpp/testHTTP/.vscode/c_cpp_properties.json
@@ -0,0 +1,18 @@
+{
+  "configurations": [
+    {
+      "name": "linux-gcc-x64",
+      "includePath": [
+        "${workspaceFolder}/**"
+      ],
+      "compilerPath": "/usr/bin/gcc",
+      "cStandard": "${default}",
+      "cppStandard": "${default}",
+      "intelliSenseMode": "linux-gcc-x64",
+      "compilerArgs": [
+        ""
+      ]
+    }
+  ],
+  "version": 4
+}
\ No newline at end of file
diff --git a/Cpp/testHTTP/.vscode/launch.json b/Cpp/testHTTP/.vscode/launch.json
new file mode 100644
index 0000000..64b32a5
--- /dev/null
+++ b/Cpp/testHTTP/.vscode/launch.json
@@ -0,0 +1,24 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "C/C++ Runner: Debug Session",
+      "type": "cppdbg",
+      "request": "launch",
+      "args": [],
+      "stopAtEntry": false,
+      "externalConsole": false,
+      "cwd": "/config/workspace/Cpp/testHTTP/MyHttp",
+      "program": "/config/workspace/Cpp/testHTTP/MyHttp/build/Debug/outDebug",
+      "MIMode": "gdb",
+      "miDebuggerPath": "gdb",
+      "setupCommands": [
+        {
+          "description": "Enable pretty-printing for gdb",
+          "text": "-enable-pretty-printing",
+          "ignoreFailures": true
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/Cpp/testHTTP/.vscode/settings.json b/Cpp/testHTTP/.vscode/settings.json
new file mode 100644
index 0000000..bfd7745
--- /dev/null
+++ b/Cpp/testHTTP/.vscode/settings.json
@@ -0,0 +1,37 @@
+{
+  "C_Cpp_Runner.cCompilerPath": "gcc",
+  "C_Cpp_Runner.cppCompilerPath": "g++",
+  "C_Cpp_Runner.debuggerPath": "gdb",
+  "C_Cpp_Runner.cStandard": "",
+  "C_Cpp_Runner.cppStandard": "",
+  "C_Cpp_Runner.msvcBatchPath": "",
+  "C_Cpp_Runner.useMsvc": false,
+  "C_Cpp_Runner.warnings": [
+    "-Wall",
+    "-Wextra",
+    "-Wpedantic",
+    "-Wshadow",
+    "-Wformat=2",
+    "-Wconversion",
+    "-Wnull-dereference",
+    "-Wsign-conversion"
+  ],
+  "C_Cpp_Runner.enableWarnings": true,
+  "C_Cpp_Runner.warningsAsError": false,
+  "C_Cpp_Runner.compilerArgs": [],
+  "C_Cpp_Runner.linkerArgs": [],
+  "C_Cpp_Runner.includePaths": [],
+  "C_Cpp_Runner.includeSearch": [
+    "*",
+    "**/*"
+  ],
+  "C_Cpp_Runner.excludeSearch": [
+    "**/build",
+    "**/build/**",
+    "**/.*",
+    "**/.*/**",
+    "**/.vscode",
+    "**/.vscode/**"
+  ],
+  "C_Cpp_Runner.useAddressSanitizer": false
+}
\ No newline at end of file
diff --git a/Cpp/testHTTP/MyHttp/CMakeLists.txt b/Cpp/testHTTP/MyHttp/CMakeLists.txt
new file mode 100644
index 0000000..e13870a
--- /dev/null
+++ b/Cpp/testHTTP/MyHttp/CMakeLists.txt
@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 3.22.1)
+project(MyHttp)
+
+set(CMAKE_CXX_STANDARD 20)
+
+add_executable(${PROJECT_NAME} main.cpp)
+
+target_link_libraries(${PROJECT_NAME} wfrest workflow z)
+
+set(CMAKE_INSTALL_RPATH /usr/local/lib)
\ No newline at end of file
diff --git a/Cpp/testHTTP/MyHttp/main b/Cpp/testHTTP/MyHttp/main
new file mode 100755
index 0000000..3b8b223
Binary files /dev/null and b/Cpp/testHTTP/MyHttp/main differ
diff --git a/Cpp/testHTTP/MyHttp/main.cpp b/Cpp/testHTTP/MyHttp/main.cpp
new file mode 100644
index 0000000..2872801
--- /dev/null
+++ b/Cpp/testHTTP/MyHttp/main.cpp
@@ -0,0 +1,26 @@
+/*
+
+g++ -o main main.cpp -std=c++11 -lwfrest -lworkflow -lz -Wl,-rpath=/usr/local/lib
+
+*/
+#include "wfrest/HttpServer.h"
+#include <cstdio>
+#include <iostream>
+#include <string>
+#include <wfrest/HttpContent.h>
+#include <wfrest/HttpMsg.h>
+#include <workflow/URIParser.h>
+using namespace wfrest;
+int main(){
+
+    HttpServer sv;
+    sv.GET("/",[](const HttpReq *req,HttpResp *resp)->void{
+        
+    });
+    if (sv.start(8888)==0) {
+        getchar();
+        sv.stop();
+    }else {
+        fprintf(stderr,"Cannot open port 8888 and start the server!!");
+    }
+}
\ No newline at end of file
diff --git a/Luogu/P3957/P3957.cpp b/Luogu/P3957/P3957.cpp
new file mode 100644
index 0000000..d0c7a29
--- /dev/null
+++ b/Luogu/P3957/P3957.cpp
@@ -0,0 +1,59 @@
+#include <algorithm>
+#include <bits/stdc++.h>
+#include <iostream>
+using namespace std;
+
+struct _arrN{
+    int x,s;
+};
+const int MaxN = 5e5+5;
+int n,d,k,f[MaxN];
+
+_arrN arr[MaxN];
+
+bool check(int);
+
+int main(){
+    cin>>n>>d>>k;
+    for (int i=1; i<=n; i++) {
+        cin>>arr[i].x>>arr[i].s;
+    }
+    // cout<<check(1)<<endl;
+
+    int l=0,r=1e5,ans=-1;
+    while (l<=r) {
+        int mid = (l+r)/2;
+        if (check(mid)) {
+            ans=mid;
+            r=mid-1;
+        }else {
+            l=mid+1;
+        }
+    }
+
+    cout<<ans<<endl;
+}
+
+
+bool check(int g){
+    int lSet=max(0,d-g),rSet=d+g;
+    for (int i=1; i<sizeof(f)/sizeof(int); i++) {
+        f[i]=INT_MIN;
+    }
+    
+    for (int i=1; i<=n; i++) {
+        for (int j=i-1; j>=1; j--) {
+            if (arr[i].x-arr[j].x<lSet) {
+                continue;
+            }
+            if (arr[i].x-arr[j].x>rSet) {
+                break;
+            }
+            f[i]=max(f[i],f[j]+arr[i].s);
+            if (f[i]>=k) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
\ No newline at end of file
diff --git a/Luogu/P3957/build/Debug/outDebug b/Luogu/P3957/build/Debug/outDebug
new file mode 100755
index 0000000..d769ca9
Binary files /dev/null and b/Luogu/P3957/build/Debug/outDebug differ