#list_closest_pair.py
# closest pair of numbers in a list

num_numbers = int(input("Enter the number of numbers: "))
A = []

for i in range(num_numbers):
    A.append(float(input("Enter a number: ")))

min_distance = float('inf')
for i in range(num_numbers):
    for j in range(i+1,num_numbers):  #each index in the rest of the list
        distance = abs(A[i]-A[j])  #absolute value of difference of two numbers is the distance between them
        if  distance < min_distance:
            min_distance = distance
            num1_index = i   #remember which pair is min distance
            num2_index = j

print("Min distance pair:",A[num1_index],A[num2_index]," Distance:",min_distance)