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摘要： Runaround NumbersRunaround numbers are integers with unique digits, none of which is zero (e.g., 81362) that also have an interesting property, exempl... 阅读全文

摘要： GTW likes gt Accepts: 132 Submissions: 772 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others) GTW likes gt Accepts: 13 阅读全文

摘要： Preface NumberingA certain book's prefaces are numbered in upper case Roman numerals. Traditional Roman numeral values use a single letter to represen... 阅读全文

摘要： Hamming CodesRob KolstadGiven N, B, and D: Find a set of N codewords (1 7 #include 8 #include 9 using namespace std;10 int n,m,d,cnt=1;11 int topnum=... 阅读全文

摘要： Healthy HolsteinsBurch & KolstadFarmer John prides himself on having the healthiest dairy cows in the world. He knows the vitamin content for one scoo... 阅读全文

摘要： Sorting a Three-Valued SequenceIOI'96 - Day 2Sorting is one of the most frequently performed computational tasks. Consider the special sorting problem... 阅读全文

摘要： Ordered FractionsConsider the set of all reduced fractions between 0 and 1 inclusive with denominators less than or equal to N.Here is the set when N ... 阅读全文

摘要： The CastleIOI'94 - Day 1In a stroke of luck almost beyond imagination, Farmer John was sent a ticket to the Irish Sweepstakes (really a lottery) for h... 阅读全文

摘要： Superprime RibButchering Farmer John's cows always yields the best prime rib. You can tell prime ribs by looking at the digits lovingly stamped across... 阅读全文

摘要： Prime PalindromesThe number 151 is a prime palindrome because it is both a prime number and a palindrome (it is the same number when read forward as b... 阅读全文