Rejudge Progress:

2242: 素数筛选A

Time Limit: 1000 MS Memory Limit: 65536 KB
Total Submit: 390 Accepted: 31 Page View: 1683
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The Problem is : Give you a Ineteger N,Could you tell me the number of prime number between 1 to N.
There are several cases. each case , only one integer N (N<=100000000)
For each case ,output the answer for a line.