feat(go): add hhcn

go/hhcn.go

@@ -0,0 +1,18 @@
+package main
+
+import (
+	"fmt"
+	"math"
+)
+
+func main() {
+	var A, B, C int64
+	fmt.Scan(&A, &B, &C)
+
+	a := math.Sqrt(float64(A*C) / float64(B))
+	b := math.Sqrt(float64(A*B) / float64(C))
+	c := math.Sqrt(float64(B*C) / float64(A))
+
+	perimeter := 4 * (int64(a) + int64(b) + int64(c))
+	fmt.Println(perimeter)
+}