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3842:An Industrial Spy

题目描述
Industrial spying is very common for modern research labs. I am such an industrial spy - don't tell anybody! My recent job was to steal the latest inventions from a famous math research lab. It was hard to obtain some of their results but I got their waste out of a document shredder.
I have already reconstructed that their research topic is fast factorization. But the remaining paper snippets only have single digits on it and I cannot imagine what they are for. Could it be that those digits form prime numbers? Please help me to find out how many prime numbers can be formed using the given digits.
输入解释
The first line of the input holds the number of test cases c (1 <= c <= 200). Each test case consists of a single line. This line contains the digits (at least one, at most seven) that are on the paper snippets.
输出解释
For each test case, print one line containing the number of different primes that can be reconstructed by shuffling the digits. You may ignore digits while reconstructing the primes (e.g., if you get the digits 7 and 1, you can reconstruct three primes 7, 17, and 71). Reconstructed numbers that (regarded as strings) differ just by leading zeros, are considered identical (see the fourth case of the sample input).
输入样例
4
17
1276543
9999999
011
输出样例
3
1336
0
2

该题目是Virtual Judge题目,来自 北京大学POJ

源链接: POJ-3842

最后修改于 2020-10-29T07:13:24+00:00 由爬虫自动更新

共提交 0

通过率 --%
时间上限 内存上限
1000 65536