摘要： Given an increasing sequence S of N integers, the median is the number at the middle position. For example, the median of S1={11, 12, 13, 14} is 12, a 阅读全文

摘要： A numeric sequence of ai is ordered if a1 < a2 < ... < aN. Let the subsequence of the given numeric sequence ( a1, a2, ..., aN) be any sequence ( ai1, 阅读全文

摘要： You're given a string of lower-case Latin letters. Your task is to find the length of its longest substring that can be met in the string at least twi 阅读全文

摘要： Summer is coming! It's time for Iahub and Iahubina to work out, as they both want to look hot at the beach. The gym where they go is a matrix a with n 阅读全文

摘要： Little John is playing very funny game with his younger brother. There is one big box filled with M&Ms of different colors. At first John has to eat s 阅读全文