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Notice that the number 123456789 is a 9-digit number consisting exactly the numbers from 1 to 9, with no duplication. Double it we will obtain 2469135 阅读全文
posted @ 2018-06-13 16:25
赖兴宇
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Given a non-negative integer N, your task is to compute the sum of all the digits of N, and output every digit of the sum in English. Input Specificat 阅读全文
posted @ 2018-06-13 16:05
赖兴宇
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Eva would like to make a string of beads with her favorite colors so she went to a small shop to buy some beads. There were many colorful strings of b 阅读全文
posted @ 2018-06-13 15:52
赖兴宇
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Some scientists took pictures of thousands of birds in a forest. Assume that all the birds appear in the same picture belong to the same tree. You are 阅读全文
posted @ 2018-06-13 15:41
赖兴宇
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Given a syntax tree (binary), you are supposed to output the corresponding infix expression, with parentheses reflecting the precedences of the operat 阅读全文
posted @ 2018-06-13 14:23
赖兴宇
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