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Description A robot has been programmed to follow the instructions in its path. Instructions for the next direction the robot is to move are laid down 阅读全文
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Description Soon after he decided to design a T-shirt for our Algorithm Board on Free-City BBS, XKA found that he was trapped by all kinds of suggesti 阅读全文
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Description During his last sabbatical, professor M. A. Ya made a surprising discovery about the old Maya calendar. From an old knotted message, profe 阅读全文
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Description A single positive integer i is given. Write a program to find the digit located in the position i in the sequence of number groups S1S2... 阅读全文
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Description T. Chur teaches various groups of students at university U. Every U-student has a unique Student Identification Number (SIN). A SIN s is a 阅读全文