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Discussion of Problem 1201. Which Day Is It?

hint for WA 10
Posted by BORODA 8 Feb 2014 19:24
The answer for "30 1 2012":

mon........2....9...16...23..[30]
tue........3...10...17...24...31
wed........4...11...18...25.....
thu........5...12...19...26.....
fri........6...13...20...27.....
sat........7...14...21...28.....
sun...1....8...15...22...29.....

between first and second column there are exactly 4(!) '.';