Change graph description format

Also adds a `genrand' program for testing purposes.

1 files changed, 8 insertions, 6 deletions

diff --git a/test4.txt b/test4.txt
index 3f583d4..3b57188 100644
--- a/test4.txt
+++ b/test4.txt
@@ -1,6 +1,8 @@
-1 5
-1 2 1 5 10
-2 1 1 4 2 3 3
-3 2 3 4 5 5 1.5
-4 2 2 3 5 5 5
-5 1 10 4 5 3 1.5
+a e
+a b 1
+a e 10
+b c 3
+b d 2
+c d 5
+d e 5
+c e 1.5