题目Eva would like to make a string of beads with her favorite colors so
题目A number that will be the same when it is written forwards or back
1035Password(20分)To prepare for PAT, the judge sometimes has to generate random passwords for the users. The problem is that there are always some confusing passwords since it is hard to distingu...
1028List Sorting(25分)Excel can sort records according to any column. Now you are supposed to imitate this function.Input Specification:Each input file contains one test case. For each case, t...
1116Come on! Let's C(20分)"Let's C" is a popular and fun programming contest hosted by the College of Computer Science and Technology, Zhejiang University. Since the idea of the contest is for fun...
1023Have Fun with Numbers(20分)Notice that the number 123456
1025PA
1012The Best Rank(25分)To evaluate the performance of our first year CS majored students, we consider their grades of three courses only:C- C Programming Language,M- Mathematics (Calculus or L...
1041Be Unique(20分)Being unique is so important to people on Mars that even their lottery is designed in a unique way. The rule of winning is simple: one bets on a number chosen from [1,104]. T...
1015Reversible Primes(20分)Areversible primein any number system is a prime whose "reverse" in that number system is also a prime. For example in the decimal system 73 is a reversible prime beca...
1152Google Recruitment(20分)In July 2004, Google posted on a giant
1002A+B for Polynomials（25分)This time, you are supposed to findA+BwhereAandBare two polynomials.Input Specification:Each input file contains one test case. Each case occupies 2 lines, a...
1006Sign In and Sign Out（25分)At the beginning of every day, the first person who signs in the computer room will unlock the door, and the last one who signs out will lock the door. Given the reco...
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