Create test.cs

test.cs

@@ -0,0 +1,32 @@
+// C#
+
+using System;
+class test
+{
+    static int gcd(int a, int b)
+    {
+        if (b > 0) return gcd(b, a % b);
+        else return a;
+    }
+    static void Main()
+    {
+        Console.WriteLine("test");
+
+        const int N = 1000;
+        int[] A = new int[N];
+        for (int i = 0; i < N; i++)
+        {
+            A[i] = i;
+        }
+
+        int ans = 0;
+        for (int i = 0; i < N; i++)
+        {
+            for (int j = 0; j < N; j++)
+            {
+                ans += gcd(i, j);
+            }
+        }
+        Console.WriteLine(ans);
+    }
+}