917. Twice the minimum

An array of real numbers is given. Compute the twice value of the minimum element in the array.

Input. The first line contains the number of elements in the array n (n ≤ 100). The second line contains n real numbers, each with an absolute value not exceeding 100.

Output. Print the twice value of the minimum element in the array with two decimal places.

Sample input	Sample output
6 6 7.5 2.1 2.0 0 -3	-6.00

SOLUTION

arrays

Algorithm analysis

Using a loop, find the minimum element of the array min. Then print its twice value.

Algorithm implementation

Read the input data. Compute the minimum element min of the array.

scanf("%d", &n);

min = 100;

for (i = 0; i < n; i++)

{

scanf("%lf", &a);

if (a < min) min = a;

}

Print the answer – the twice value of the minimum element.

printf("%.2lf\n", 2 * min);

Python implementation

Read the input data.

n = int(input())

lst = list(map(float, input().split()))

Compute the minimum element of the list lst.

mn = min(lst)

Print the answer – the twice value of the minimum element.

print(2 * mn)