minimum-loss.py

# https://www.hackerrank.com/challenges/minimum-loss

n =  int(input().strip())
numbers = list(map(int,input().strip().split()))
myDict = {}
for i in range(n):
    myDict[numbers[i]]=i
minCost = 10**10
nums = sorted(myDict)
for i in range(1,n):
    if (nums[i]-nums[i-1] < minCost)  and (myDict[nums[i]] < myDict[nums[i-1]]):
        minCost = nums[i]-nums[i-1]
print(minCost)