minor README edits

2893733f · ys554 · 89ff122e · 2893733f · 2893733f · 2893733f
Commit 2893733f authored Feb 5, 2019 by ys554
--- a/a1/README
+++ b/a1/README
@@ -3,3 +3,7 @@ Prob 1 outputs the total number of directories and the total number of messages
 Prob 2 outputs how many messages are in the longest thread, and all threads that are of that length.

 Prob 3 takes in a data (Year/Month/Date) and returns a message sent on that day
+
+Prob 4 outputs hostnames and messages sent there
+
+No other programs are needed to execute the programs. Thanks!
--- a/a1/prob2
+++ b/a1/prob2
--- a/a1/prob3
+++ b/a1/prob3
--- a/a1/prob4
+++ b/a1/prob4