diff --git a/1670_numcut(zheng)/Readme.md b/1670_numcut(zheng)/Readme.md
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index 0000000..b4f8d75
--- /dev/null
+++ b/1670_numcut(zheng)/Readme.md
@@ -0,0 +1,3 @@
+# 标题
+
+* 内容
\ No newline at end of file
diff --git a/1670_numcut(zheng)/doc/Readme.md b/1670_numcut(zheng)/doc/Readme.md
new file mode 100644
index 0000000..4e768b5
--- /dev/null
+++ b/1670_numcut(zheng)/doc/Readme.md
@@ -0,0 +1 @@
+# 
\ No newline at end of file
diff --git a/1670_numcut(zheng)/doc/鏁存暟鎷嗘.pdf b/1670_numcut(zheng)/doc/鏁存暟鎷嗘.pdf
new file mode 100644
index 0000000..84d5dd0
Binary files /dev/null and b/1670_numcut(zheng)/doc/鏁存暟鎷嗘.pdf differ
diff --git a/1670_numcut(zheng)/main.cpp b/1670_numcut(zheng)/main.cpp
new file mode 100644
index 0000000..559287a
--- /dev/null
+++ b/1670_numcut(zheng)/main.cpp
@@ -0,0 +1,36 @@
+#include <iostream>
+using namespace std;
+int main()
+{
+    long long  a[11],all=0,da[11][11]={0};
+    char u;
+    while(cin>>u){
+        all++;
+        a[all]=u-'0';
+    }
+    // for(int i=1;i<=all;i++){
+    //     cout<<a[i]<<" ";
+    // }
+    // cout<<endl;
+    for(int i=1;i<=all;i++){
+        for(int j=1;j<=i;j++){
+            da[i][j]=da[i-1][j]*10+a[i];
+            // cout<<da[i][j]<<" ";
+        }
+        // cout<<endl;
+    }
+    long long  ans=-1;
+    for(int i=1;i<=all-3;i++){
+        for(int j=i+1;j<=all-2;j++){
+            for(int k=j+1;k<=all-1;k++){
+                long long now=da[all][k+1]*da[k][j+1]*da[j][i+1]*da[i][1];
+                // cout<<now<<endl;
+                if(now<ans||ans==-1){
+                    ans=now;
+                }
+            }
+        }
+    }
+    cout<<ans;
+    return 0;
+}
diff --git a/1670_numcut(zheng)/main.exe b/1670_numcut(zheng)/main.exe
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index 0000000..80e412a
Binary files /dev/null and b/1670_numcut(zheng)/main.exe differ
diff --git a/1670_numcut(zheng)/test/in.txt b/1670_numcut(zheng)/test/in.txt
new file mode 100644
index 0000000..f4d34b9
--- /dev/null
+++ b/1670_numcut(zheng)/test/in.txt
@@ -0,0 +1 @@
+2664256234
diff --git a/1670_numcut(zheng)/test/in2.txt b/1670_numcut(zheng)/test/in2.txt
new file mode 100644
index 0000000..9f2a07b
--- /dev/null
+++ b/1670_numcut(zheng)/test/in2.txt
@@ -0,0 +1 @@
+321427
diff --git a/1670_numcut(zheng)/test/in3.txt b/1670_numcut(zheng)/test/in3.txt
new file mode 100644
index 0000000..274c005
--- /dev/null
+++ b/1670_numcut(zheng)/test/in3.txt
@@ -0,0 +1 @@
+1234
\ No newline at end of file
diff --git a/1670_numcut(zheng)/test/out.txt b/1670_numcut(zheng)/test/out.txt
new file mode 100644
index 0000000..c700eec
--- /dev/null
+++ b/1670_numcut(zheng)/test/out.txt
@@ -0,0 +1,18 @@
+## z:\Chao\src\1670_numcut\test\in.txt 
+2020/07/22 周三 10:42:07.83 
+46374912
+-----------------------------------------------
+Process exited after 180 ms with return value 0
+
+## z:\Chao\src\1670_numcut\test\in2.txt 
+2020/07/22 周三 10:42:07.83 
+2268
+-----------------------------------------------
+Process exited after 90 ms with return value 0
+
+## z:\Chao\src\1670_numcut\test\in3.txt 
+2020/07/22 周三 10:42:07.83 
+24
+-----------------------------------------------
+Process exited after 90 ms with return value 0
+