diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000000000000000000000000000000000000..691a8f68f405ccdc2ba08296bd21c804bbec2ff3
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,3 @@
+{
+    "C_Cpp.errorSquiggles": "Disabled"
+}
\ No newline at end of file
diff --git a/conv_.cpp b/conv_.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..62adee6008a0ab10260ab69c6f186738f48aa983
--- /dev/null
+++ b/conv_.cpp
@@ -0,0 +1,23 @@
+#include<iostream>
+#include<ctime>
+#include<string>
+#include <time.h>
+#include <math.h>
+#include <fstream>
+#include "./autodiff/node.h"
+#include"./matrix/matrix_def.h"
+#include"./matrix/matrix_pro.h"
+#include"./welcome/score_wel.cpp"
+#include"./logistic/logistic_def.h"
+#include"./file_pro/data_read.h"
+#include"./grad_edge/matrix_grad.h"
+using namespace std;
+clock_t start, stop;
+double duration;
+int main()
+{
+    welcome();
+    cout_mat(conv_test(CreateRandMat(3,3),1,2));
+    return 0;
+
+}
\ No newline at end of file
diff --git a/ma b/ma
index d55d9ec4724f7ddf8775cc4a95a98817f369e28e..4fab05d65282834b63ab851329b73bf515c4a0ef 100755
Binary files a/ma and b/ma differ
diff --git a/main.cpp b/main.cpp
index 01cfab62277a2fa3143f5e03daa592d871dada6d..62ab06f4a168fe378d7b56329458cd48b1fce6a4 100644
--- a/main.cpp
+++ b/main.cpp
@@ -19,7 +19,7 @@ Node t1 = 1,a13 = 1;
 /*自定义的损失函数*/
 Node loss_act(Node t1,Node a13)
 {
-	 Node loss = 0.5*(pow((t1-a13),2));
+	 Node loss =  0.5*(pow((t1-a13),2));
 	 return loss;
 }
 Node sigmoid_act(Node z)
@@ -32,7 +32,7 @@ Node (*loss)(Node,Node) = loss_act;
 Node (*act)(Node) = sigmoid_act;
 int main()
 {
-	//begin
+	//begin 
 	cout<<"---------autodiff for neraul network-----------"<<endl;
 	Matrix data_mine = CreateMatrix(2,1);
 	cout<<"data mine"<<endl;
@@ -65,4 +65,4 @@ int main()
 	cout<<"neraul end;"<<endl;
 	return 0;
 	}
-}
+}
\ No newline at end of file
diff --git a/matrix/.matrix_pro.h.swp b/matrix/.matrix_pro.h.swp
new file mode 100644
index 0000000000000000000000000000000000000000..ebe378cde75ac2dd265cb68c4e01f43b0251b731
Binary files /dev/null and b/matrix/.matrix_pro.h.swp differ
diff --git a/matrix/conv_test.cpp b/matrix/conv_test.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..7e81762300330621ba8984994eef59e5f099eec1
--- /dev/null
+++ b/matrix/conv_test.cpp
@@ -0,0 +1,4 @@
+#include<iostream>
+#include<stdlib.h>
+#include<string>
+int main()
diff --git a/matrix/matrix_pro.h b/matrix/matrix_pro.h
index 21a8111d8eaa72301a9cf7f837896eb90d4f9dbd..dce9be3d9b375d1a1d567d5f7e20d44fee621f11 100644
--- a/matrix/matrix_pro.h
+++ b/matrix/matrix_pro.h
@@ -341,4 +341,12 @@ Matrix get_row(Matrix mid1,int index)
 	}
 	return mid2;
 }
+Matrix conv_test(Matrix mid1,int stride = 1,int kernel_size = 3)
+{
+	Matrix kernel = CreateRandMat(kernel_size,kernel_size);
+	cout_mat(kernel);
+	Matrix crop_pic = iloc(mid1,0,kernel.col,0,kernel.row);
+	Matrix result = mul(crop_pic,kernel);
+	return result;
+}
 #endif
diff --git a/welcome/1.cpp b/welcome/1.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..fb1a4b68ad9981ed334a26ebf91bb5c4e4084ae7
--- /dev/null
+++ b/welcome/1.cpp
@@ -0,0 +1,21 @@
+#include <cstdio>
+#include <iostream>
+#include <fstream>
+#include <string>
+using namespace std;
+int main()
+{
+    fstream input_stream;
+    input_stream.open(".txt",ios::in);
+    
+    char input[1000000]; 
+	int cnt=0;
+    if(input_stream.is_open()){ 
+		//cout<<"yes\n"; 
+        while(!input_stream.eof()){ 
+            input_stream.getline(input,999);  
+            cout<<input<<endl;  
+        }  
+    }  
+    input_stream.close();
+}
\ No newline at end of file
diff --git a/welcome/2.txt b/welcome/2.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9317dea4a266d9ea1ec1bcee9f2126ea5aa00fc4
--- /dev/null
+++ b/welcome/2.txt
@@ -0,0 +1,6 @@
+   ___       _     __ _                                                         ___             __ _     _                    
+  | __|   __| |   / _` |   ___      o O O    o O O    o O O    o O O    o O O  | __|   _ _     / _` |   (_)    _ _      ___   
+  | _|   / _` |   \__, |  / -_)    o        o        o        o        o       | _|   | ' \    \__, |   | |   | ' \    / -_)  
+  |___|  \__,_|   |___/   \___|   TS__[O]  TS__[O]  TS__[O]  TS__[O]  TS__[O]  |___|  |_||_|   |___/   _|_|_  |_||_|   \___|  
+_|"""""|_|"""""|_|"""""|_|"""""| {======| {======| {======| {======| {======|_|"""""|_|"""""|_|"""""|_|"""""|_|"""""|_|"""""| 
+"`-0-0-'"`-0-0-'"`-0-0-'"`-0-0-'./o--000'./o--000'./o--000'./o--000'./o--000'"`-0-0-'"`-0-0-'"`-0-0-'"`-0-0-'"`-0-0-'"`-0-0-' 
\ No newline at end of file
diff --git a/welcome/3.txt b/welcome/3.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e6f59d95a0d4e7b35efc0440c3edfa58414d9148
--- /dev/null
+++ b/welcome/3.txt
@@ -0,0 +1,7 @@
+
+███████╗██████╗  ██████╗ ███████╗                ███████╗███╗   ██╗ ██████╗ ██╗███╗   ██╗███████╗
+██╔════╝██╔══██╗██╔════╝ ██╔════╝                ██╔════╝████╗  ██║██╔════╝ ██║████╗  ██║██╔════╝
+█████╗  ██║  ██║██║  ███╗█████╗                  █████╗  ██╔██╗ ██║██║  ███╗██║██╔██╗ ██║█████╗  
+██╔══╝  ██║  ██║██║   ██║██╔══╝                  ██╔══╝  ██║╚██╗██║██║   ██║██║██║╚██╗██║██╔══╝  
+███████╗██████╔╝╚██████╔╝███████╗                ███████╗██║ ╚████║╚██████╔╝██║██║ ╚████║███████╗
+╚══════╝╚═════╝  ╚═════╝ ╚══════╝                ╚══════╝╚═╝  ╚═══╝ ╚═════╝ ╚═╝╚═╝  ╚═══╝╚══════╝
\ No newline at end of file
diff --git a/welcome/4.txt b/welcome/4.txt
new file mode 100644
index 0000000000000000000000000000000000000000..4b7416813a359553272572825030a8b3b9e9240f
--- /dev/null
+++ b/welcome/4.txt
@@ -0,0 +1,26 @@
+
+//  44444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444
+//  4444444444444444444444444444444444dddddddd44444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444
+//  EEEEEEEEEEEEEEEEEEEEEE444444444444d::::::d4444444444444444444444444444444444444444444444444444444EEEEEEEEEEEEEEEEEEEEEE4444444444444444444444444444444444444444iiii4444444444444444444444444444444444444444
+//  E::::::::::::::::::::E444444444444d::::::d4444444444444444444444444444444444444444444444444444444E::::::::::::::::::::E444444444444444444444444444444444444444i::::i444444444444444444444444444444444444444
+//  E::::::::::::::::::::E444444444444d::::::d4444444444444444444444444444444444444444444444444444444E::::::::::::::::::::E4444444444444444444444444444444444444444iiii4444444444444444444444444444444444444444
+//  EE::::::EEEEEEEEE::::E444444444444d:::::d44444444444444444444444444444444444444444444444444444444EE::::::EEEEEEEEE::::E444444444444444444444444444444444444444444444444444444444444444444444444444444444444
+//  44E:::::E4444444EEEEEE4444ddddddddd:::::d4444ggggggggg444ggggg4444eeeeeeeeeeee444444444444444444444E:::::E4444444EEEEEEnnnn44nnnnnnnn4444444ggggggggg444gggggiiiiiii4nnnn44nnnnnnnn44444444eeeeeeeeeeee4444
+//  44E:::::E444444444444444dd::::::::::::::d444g:::::::::ggg::::g44ee::::::::::::ee4444444444444444444E:::::E4444444444444n:::nn::::::::nn4444g:::::::::ggg::::gi:::::i4n:::nn::::::::nn4444ee::::::::::::ee44
+//  44E::::::EEEEEEEEEE4444d::::::::::::::::d44g:::::::::::::::::g4e::::::eeeee:::::ee44444444444444444E::::::EEEEEEEEEE444n::::::::::::::nn44g:::::::::::::::::g4i::::i4n::::::::::::::nn44e::::::eeeee:::::ee
+//  44E:::::::::::::::E444d:::::::ddddd:::::d4g::::::ggggg::::::gge::::::e44444e:::::e44444444444444444E:::::::::::::::E444nn:::::::::::::::ng::::::ggggg::::::gg4i::::i4nn:::::::::::::::ne::::::e44444e:::::e
+//  44E:::::::::::::::E444d::::::d4444d:::::d4g:::::g44444g:::::g4e:::::::eeeee::::::e44444444444444444E:::::::::::::::E44444n:::::nnnn:::::ng:::::g44444g:::::g44i::::i444n:::::nnnn:::::ne:::::::eeeee::::::e
+//  44E::::::EEEEEEEEEE444d:::::d44444d:::::d4g:::::g44444g:::::g4e:::::::::::::::::e444444444444444444E::::::EEEEEEEEEE44444n::::n4444n::::ng:::::g44444g:::::g44i::::i444n::::n4444n::::ne:::::::::::::::::e4
+//  44E:::::E4444444444444d:::::d44444d:::::d4g:::::g44444g:::::g4e::::::eeeeeeeeeee4444444444444444444E:::::E444444444444444n::::n4444n::::ng:::::g44444g:::::g44i::::i444n::::n4444n::::ne::::::eeeeeeeeeee44
+//  44E:::::E4444444EEEEEEd:::::d44444d:::::d4g::::::g4444g:::::g4e:::::::e4444444444444444444444444444E:::::E4444444EEEEEE44n::::n4444n::::ng::::::g4444g:::::g44i::::i444n::::n4444n::::ne:::::::e44444444444
+//  EE::::::EEEEEEEE:::::Ed::::::ddddd::::::ddg:::::::ggggg:::::g4e::::::::e4444444444444444444444444EE::::::EEEEEEEE:::::E44n::::n4444n::::ng:::::::ggggg:::::g4i::::::i44n::::n4444n::::ne::::::::e4444444444
+//  E::::::::::::::::::::E4d:::::::::::::::::d4g::::::::::::::::g44e::::::::eeeeeeee44444444444444444E::::::::::::::::::::E44n::::n4444n::::n4g::::::::::::::::g4i::::::i44n::::n4444n::::n4e::::::::eeeeeeee44
+//  E::::::::::::::::::::E44d:::::::::ddd::::d44gg::::::::::::::g444ee:::::::::::::e44444444444444444E::::::::::::::::::::E44n::::n4444n::::n44gg::::::::::::::g4i::::::i44n::::n4444n::::n44ee:::::::::::::e44
+//  EEEEEEEEEEEEEEEEEEEEEE444ddddddddd444ddddd4444gggggggg::::::g44444eeeeeeeeeeeeee44444444444444444EEEEEEEEEEEEEEEEEEEEEE44nnnnnn4444nnnnnn4444gggggggg::::::g4iiiiiiii44nnnnnn4444nnnnnn4444eeeeeeeeeeeeee44
+//  444444444444444444444444444444444444444444444444444444g:::::g4444444444444444444444444444444444444444444444444444444444444444444444444444444444444444g:::::g44444444444444444444444444444444444444444444444
+//  444444444444444444444444444444444444444444gggggg444444g:::::g4444444444444444444444444444444444444444444444444444444444444444444444444444gggggg444444g:::::g44444444444444444444444444444444444444444444444
+//  444444444444444444444444444444444444444444g:::::gg444gg:::::g4444444444444444444444444444444444444444444444444444444444444444444444444444g:::::gg444gg:::::g44444444444444444444444444444444444444444444444
+//  4444444444444444444444444444444444444444444g::::::ggg:::::::g44444444444444444444444444444444444444444444444444444444444444444444444444444g::::::ggg:::::::g44444444444444444444444444444444444444444444444
+//  44444444444444444444444444444444444444444444gg:::::::::::::g4444444444444444444444444444444444444444444444444444444444444444444444444444444gg:::::::::::::g444444444444444444444444444444444444444444444444
+//  4444444444444444444444444444444444444444444444ggg::::::ggg44444444444444444444444444444444444444444444444444444444444444444444444444444444444ggg::::::ggg44444444444444444444444444444444444444444444444444
+//  4444444444444444444444444444444444444444444444444gggggg44444444444444444444444444444444444444444444444444444444444444444444444444444444444444444gggggg44444444444444444444444444444444444444444444444444444
diff --git a/welcome/big.txt b/welcome/big.txt
new file mode 100644
index 0000000000000000000000000000000000000000..38669b5e54a96173c66c2ad90c426a323fcd2db4
--- /dev/null
+++ b/welcome/big.txt
@@ -0,0 +1,9 @@
+
+  ______    _              ______             _            
+ |  ____|  | |            |  ____|           (_)           
+ | |__   __| | __ _  ___  | |__   _ __   __ _ _ _ __   ___ 
+ |  __| / _` |/ _` |/ _ \ |  __| | '_ \ / _` | | '_ \ / _ \
+ | |___| (_| | (_| |  __/ | |____| | | | (_| | | | | |  __/
+ |______\__,_|\__, |\___| |______|_| |_|\__, |_|_| |_|\___|
+               __/ |                     __/ |             
+              |___/                     |___/              
diff --git a/welcome/ma b/welcome/ma
new file mode 100755
index 0000000000000000000000000000000000000000..e3818a39e40a610eb1d4c94f07b68f5f668e8c2c
Binary files /dev/null and b/welcome/ma differ
diff --git a/welcome/score_wel.cpp b/welcome/score_wel.cpp
index 1dda0c07a979c31d83880d3a3e153c3b61333df0..6a9edead3dec56216b7a54a117675b9f0b751c99 100644
--- a/welcome/score_wel.cpp
+++ b/welcome/score_wel.cpp
@@ -1,8 +1,29 @@
 #include<iostream>
 #include<string>
+#include <cstdio>
+#include <iostream>
+#include <fstream>
+#include <string>
+#include<stdlib.h>
+#define random(x) (rand()%x)
 using namespace std;
 int welcome(){
 	cout<<"----------";
 	cout<<"Hello This is Edge"<<"----------"<<endl;
+    fstream input_stream;
+	const char* candidates[] = {"./welcome/2.txt","./welcome/3.txt","./welcome/big.txt"};
+	srand((unsigned int)time(NULL));
+    input_stream.open(candidates[rand()%3],ios::in);
+	cout<<"new"<<input_stream.is_open()<<endl;
+    char input[1000000]; 
+	int cnt=0;
+    if(input_stream.is_open()){ 
+		cout<<"yes\n"; 
+        while(!input_stream.eof()){ 
+            input_stream.getline(input,999);  
+            cout<<input<<endl;  
+        }  
+    }
+    input_stream.close();
 	return 0;
 }