git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@4638 c06c8d41-db1a-0410-9941-cceddc491573
CN33TRD23Q3P2K5ZP7PZLMWM6ZXDMYM6OTCI65MRDVY335WMGBLAC
HXAKQLE5VFM3TREGGSFH362HVJPZ2NE5JCQUTMKD5YBZCS4JTU4AC
K2CS6TCX2NDVL2ASEHGP4J4K4IJ6FP3ANNKTSIWVG43HPYSBX6ZQC
KKEPQAZMWQFWPQ4P4KT5PWG2YFPG7H4JHL5K7USVHQ3Y6L4NWURQC
exercise(SK_INVOCATIONS, 1 + random2(result));
exercise(SK_INVOCATIONS, 2 + random2(result));