### wrick's blog

By wrick, history, 5 years ago,

My rating has been in a free fall due to Scala solutions not running in Codeforces for the last couple of contests. Please see:

29977952

29890121

29874042

29999130

They work fine locally and they randomly fail with this error:

java.lang.NoClassDefFoundError: scala/collection/TraversableOnce$class at IO.<init>(_849A.scala:188) at IO.<init>(_849A.scala:189) at IO.<init>(_849A.scala:190) at CodeForcesApp$class.main(_849A.scala:16)
at _849A$.main(_849A.scala:1) at _849A.main(_849A.scala) Caused by: java.lang.ClassNotFoundException: scala.collection.TraversableOnce$class