Being a fan of contemporary architecture, Farmer John has built a new barn in the shape of a perfect circle. Inside, the barn consists of a ring of n rooms, numbered clockwise from 1n around the perimeter of the barn (3n1,000). Each room has doors to its two neighboring rooms, and also a door opening to the exterior of the barn.

Farmer John wants exactly ri

cows to end up in each room i (1ri100

). To herd the cows into the barn in an orderly fashion, he plans to unlock the exterior door of a single room, allowing the cows to enter through that door. Each cow then walks clockwise through the rooms until she reaches a suitable destination. Farmer John wants to unlock the exterior door that will cause his cows to collectively walk a minimum total amount of distance. Please determine the minimum total distance his cows will need to walk, if he chooses the best such door to unlock. The distance walked by a single cow is the number of interior doors through which she passes.

Write the entire code in C++ and take the input and output as per the format.

INPUT FORMAT :

The first line of input contains n

. Each of the remaining n lines contain r1rn

.

OUTPUT FORMAT :

Please write out the minimum total amount of distance the cows collectively need to travel.

SAMPLE INPUT:

5 4 7 8 6 4 

SAMPLE OUTPUT:

48 

Explanation:

In this example, the best solution is to let the cows enter through the door of the room that requires 7 cows.