It is conjectured that the algorithm above will terminate (when a 1 is printed) for any integral input value. Despite the simplicity of the algorithm, it is u nknown whether this conjecture is true. It has been verified, however, for all integers n such that 0 < n < 1,000,000 (and, in fact, for many more numbers tha n this.) Given an input n, it is possible to determine the number of numbers printed (in cluding the 1). For a given n this is called the cycle-length of n. In the exam ple above, the cycle length of 22 is 16. For any two numbers i and j you are to determine the maximum cycle length over all numbers between i and j. The Input The input will consist of a series of pairs of integers i and j, one pair of in tegers per line. All integers will be less than 1,000,000 and greater than 0. You should process all pairs of integers and for each pair determine the maximu m cycle length over all integers between and including i and j. The Output For each pair of input integers i and j you should output i, j, and the maximum cycle length for integers between and including i and j. These three numbers s hould be separated by at least one space with all three numbers on one line and with one line of output for each line of input. The integers i and j must appe ar in the output in the same order in which they appeared in the input and shou ld be followed by the maximum cycle length (on the same line). 這是什麼意思呢? -- 台大數學系 向下沉淪委員會 目前會員:ckaha 榮譽會員: --

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