Programming & Computer Science Answers

Average of Given Numbers

You are given space-separated integers as input. Write a program to print the average of the given numbers.

Input

The first line of input contains space-separated integers.

Output

The output should be a float value rounded up to two decimal places.

Explanation

In the example, input is

1, 0, 2, 5, 9, 8. The sum of all numbers present in the list is 25, and their average is 25/6.So, the output should be

4.17.

First Prime Number

You are given 

N inputs. Write a program to print the first prime number in the given inputs.

Input

The first line of input is an integer 

N. The next N lines each contain an integer.

Explanation

In the given example of 

5 integers

1 
10 
4
3
2

The output should be 

3.

Sample Input 1
5
1
10
4
3
2
Sample Output 1
3
Sample Input 2
4
2
3
5
7
Sample Output 2
2

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