diff --git a/QUSTOJ/1857.cpp b/QUSTOJ/1857.cpp
new file mode 100644
index 0000000..d4466f9
--- /dev/null
+++ b/QUSTOJ/1857.cpp
@@ -0,0 +1,41 @@
+#include <iostream>
+#include <vector>
+using namespace std;
+
+int main()
+{
+    vector<int> vec;
+    int n;
+    cin>>n;
+    int tmp;
+    for(int i=0;i<n;i++)
+    {
+        cin>>tmp;
+        vec.push_back(tmp);
+    }
+    int m;
+    cin>>m;
+    bool flag=false;
+    for(int i=0;i<n;i++)
+    {
+        if(vec.at(i)==m)
+        {
+            flag=true;
+            vec.erase(vec.begin()+i);
+            for(int j=0;j<n-2;j++)
+            {
+                cout<<vec.at(j)<<" ";
+            }
+            cout<<vec.at(n-2)<<endl;
+            cout<<"You deleted "<<m<<endl;
+
+            break;///BREAK??
+        }
+    }
+    if(!flag)
+    {
+        cout<<"sorry,what you delete is not in the list."<<endl;
+    }
+
+    return 0;
+}