摘要：A + B Problem Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 571020 Accepted Submission(s): 1811 阅读全文

摘要：题目描述 Most of you have played card games (and if you haven’t, why not???) in which the deck of cards is randomized by shuffling it one or more times.A p 阅读全文

摘要：题目描述 “What a boring world!”Julyed felt so bored that she began to write numbers on the coordinate paper. She wrote a “0” on the center, then wrote the 阅读全文

摘要：题目描述 Jack and Jill developed a special encryption method, so they can enjoy conversations without worrrying about eavesdroppers. Here is how: let L be 阅读全文

摘要：题目描述 A pangram is a phrase that includes at least one occurrence of each of the 26 letters, ‘a’. . .‘z’. You’re probably familiar with this one: “The 阅读全文