diff --git "a/week16/BOJ_1_20115/\354\265\234\354\244\200\355\230\201_20115.java" "b/week16/BOJ_1_20115/\354\265\234\354\244\200\355\230\201_20115.java"
new file mode 100644
index 0000000..d94ddbd
--- /dev/null
+++ "b/week16/BOJ_1_20115/\354\265\234\354\244\200\355\230\201_20115.java"
@@ -0,0 +1,32 @@
+package week16.BOJ_1_20115;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class 최준혁_20115 {
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+
+        int N = Integer.parseInt(br.readLine());
+
+        List<Double> drinks = Arrays.stream(br.readLine().split(" "))
+                .map(Double::valueOf)
+                .collect(Collectors.toList());
+
+        Double max = Collections.max(drinks);
+        drinks.remove(max);
+
+        double total = max;
+
+        for (double i : drinks) {
+            total += (i / 2);
+        }
+
+        System.out.println(total);
+    }
+}