MathDB
SMT 2013 Advanced Topics #1

Source:

December 31, 2016
2013Advanced Topics

Problem Statement

How many positive three-digit integers abc\underline a\, \underline b\,\underline c can represent a valid date in 20132013, where either aa corresponds to a month and bc\underline b\,\underline c corresponds to the day in that month, or ab\underline a\, \underline b corresponds to a month and cc corresponds to the day? For example, 202 is a valid representation for February 2nd, and 121 could represent either January 21st or December 1st.