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1021.Prime Plus
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1021.Prime Plus
Time Limit:1000MS Memory Limit:65535KB
Description
Write a program which reads an integer n and prints the number of prime numbers which are less than or equal to n. A prime number is a natural number which has exactly two distinct natural number divisors: 1 and itself. For example, the first four prime numbers are: 2, 3, 5, 7.
Input
Input only has an integer n (0
Output
Prints the number of prime numbers.
Sample test
Sample input
6
Sample output
3
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GNU C++ 9.3.0
GNU C 9.3.0
Java 1.8
Python 3.8.4
Lua 5.3
GO 1.12.4
JS - (nodejs 10.19.0)
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Test Input
Test Output
6
Please run you code firstly.
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