diff --git a/Alaa.md b/Alaa.md
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--- /dev/null
+++ b/Alaa.md
@@ -0,0 +1,8 @@
+```
+#include <bits/stdc++.h>
+using namespace std;
+int main(){
+    long long  n ;
+    cout<< n*(n+1)/2 << endl ;
+}
+```
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