diff --git a/test.js b/test.js
new file mode 100644
index 0000000..e12086c
--- /dev/null
+++ b/test.js
@@ -0,0 +1,22 @@
+// Node.js
+
+function gcd(a, b) {
+    if (b > 0) return gcd(b, a % b);
+    else return a;
+}
+
+console.log("test");
+
+const N = 1000;
+var A = [];
+for (var i = 0; i < N; i++) {
+    A.push(i);
+}
+
+var ans = 0;
+for (i of A) {
+    for (j of A) {
+        ans += gcd(i, j);
+    }
+}
+console.log(ans);