摘要：DescriptionOn the planet Zoop, numbers are represented in base 62, using the digits 0, 1, . . . , 9, A, B, . . . , Z, a, b, . . . , z where A (base 62) = 10 (base 10) B (base 62) = 11 (base 10) ... z (base 62) = 61 (base 10). Given the digit representation of a number x in base 62, your goal is to d 阅读全文

摘要：Problem DescriptionThe I-number of x is defined to be an integer y, which satisfied the the conditions below:1. y>x;2. the sum of each digit of y(under base 10) is the multiple of 10;3. among all integers that satisfy the two conditions above, y shouble be the minimum.Given x, you're required 阅读全文

摘要：描述 A palindrome is a number that reads the same whether you read it from left to right or from right to left. Here is a surprising fact. Suppose we start with a number n. We reverse the digits of n and add it to n. If this number is a palindrome we stop. Otherwise, we repeat the reversal and additio 阅读全文

摘要：描述Fractions in octal (base 8) notation can be expressed exactly in decimal notation. For example, 0.75 in octal is 0.953125 (7/8 + 5/64) in decimal. All octal numbers of n digits to the right of the octal point can be expressed in no more than 3n decimal digits to the right of the decimal point. Wri 阅读全文