Sum and Average of an Array

Problem Description

Second lesson on arrays: iterate and accumulate at the same time.

After storing $n$ integers in an array, one pass over the array gives their sum; the sum divided by $n$ gives the average. This pattern keeps coming back in disguise: total score, average height, average temperature... the trick is always the same.

Input Format

The first line contains a positive integer $n$; the second line contains $n$ non-negative integers separated by spaces.

Output Format

One line with two values separated by a space: the sum of the $n$ numbers (an integer) and the average (rounded to 2 decimal places).

Sample Input

4
1 2 3 4

Sample Output

10 2.50

Constraints

For 100% of the test data, $1 \le n \le 1000$, and each number does not exceed $10^4$.

Hint: store the average in a double and print it with printf("%.2f", ...) or cout << fixed << setprecision(2). Note that the largest possible sum, $n \times 10^4$, is $10^7$, which still fits in an int.