diff --git a/zeta_kotlin/10821.kt b/zeta_kotlin/10821.kt
deleted file mode 100644
index e69de29..0000000
diff --git a/zeta_kotlin/completed/10821.kt b/zeta_kotlin/completed/10821.kt
new file mode 100644
index 0000000..2306f9b
--- /dev/null
+++ b/zeta_kotlin/completed/10821.kt
@@ -0,0 +1,3 @@
+fun main() {
+    println(readLine()?.split(",")?.size)
+}
\ No newline at end of file
diff --git a/zeta_kotlin/completed/2908.kt b/zeta_kotlin/completed/2908.kt
new file mode 100644
index 0000000..9254f24
--- /dev/null
+++ b/zeta_kotlin/completed/2908.kt
@@ -0,0 +1,7 @@
+fun main(){
+    val (a, b) = readLine()!!.split(" ")
+    val a_ = a.reversed().toInt()
+    val b_ = b.reversed().toInt()
+    
+    if (a_ > b_) {println(a_)} else {println(b_)}
+}
\ No newline at end of file