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diff --git a/challenge-122/abigail/java/ch-1.java b/challenge-122/abigail/java/ch-1.java
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+//
+// See ../README.md
+//
+
+//
+// Run as: ln ch-1.java ch1.java; javac ch1.java; java ch1 < input-file
+//
+
+import java.util.*;
+
+public class ch1 {
+ public static void main (String [] args) {
+ Scanner scanner = new Scanner (System . in);
+ int s = 0, c = 0;
+ while (scanner . hasNext ()) {
+ System . out . println ((s += scanner . nextInt ()) / ++ c);
+ }
+ }
+}