diff --git a/even.cpp b/even.cpp
new file mode 100644
index 0000000..423f3e2
--- /dev/null
+++ b/even.cpp
@@ -0,0 +1,17 @@
+#include <iostream>
+using namespace std;
+
+int main()
+{
+    int n;
+
+    cout << "Enter an integer: ";
+    cin >> n;
+
+    if ( n % 2 == 0)
+        cout << n << " is even";
+    else
+        cout << n << " is odd";
+
+    return 0;
+}
diff --git a/hacktoberfun b/hacktoberfun
deleted file mode 160000
index 824bece..0000000
--- a/hacktoberfun
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 824bece0bb0c61829cfe8eb31eb49706d7e9bec2
diff --git a/main.cpp b/main.cpp
new file mode 100644
index 0000000..05611ce
--- /dev/null
+++ b/main.cpp
@@ -0,0 +1,16 @@
+#include <iostream>
+
+using namespace std;
+
+int main()
+{
+
+    int n,i;
+    cout << "Nhap so lan lap "; cin >> n;
+    for (i=1;i<=n;i++)
+    {
+        cout << "Day la lan lap thu "<<i<<endl;
+    }
+
+    return 0;
+}
diff --git a/sort.cpp/a.out b/sort.cpp/a.out
old mode 100755
new mode 100644
diff --git a/sum.cpp b/sum.cpp
new file mode 100644
index 0000000..18a02b9
--- /dev/null
+++ b/sum.cpp
@@ -0,0 +1,16 @@
+#include <iostream>
+using namespace std;
+
+int main()
+{
+    int N1,N2,result;
+    
+    cout << "Enter two integers: ";
+    cin >> N1 >> N2;
+
+    result = N1 + N2;
+    
+    cout << N1 << " + " <<  N2 << " = " << result;     
+
+    return 0;
+}
diff --git a/indobits /sum.py b/sum.py
similarity index 100%
rename from indobits /sum.py
rename to sum.py