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SPOJ time: 2012-05-26 13:52:42 |
A conjecture of Paul ErdősProblem code: HS08PAUL
In number theory there is a very deep unsolved conjecture of the Hungarian Paul Erdős (1913-1996), that there exist infinitely many primes of the form x2+1, where x is an integer. However, a weaker form of this conjecture has been proved: there are infinitely many primes of the form x2+y4. You don't need to prove this, it is only your task to find the number of (positive) primes not larger than n which are of the form x2+y4 (where x and y are integers). InputAn integer T, denoting the number of testcases (T≤10000). Each of the T following lines contains a positive integer n, where n<10000000. OutputOutput the answer for each n. ExampleInput: 4 1 2 10 9999999 Output: 0 1 2 13175
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