A shop has a stack of chocolate boxes each containing a positive number of chocolates. Initially, the stack is empty. During the next N minutes, either of these two things may happen:

• The box of chocolates on top of the stack gets sold
• You receive a box of chocolates from the warehouse and put it on top of the stack.

Determine the number of chocolates in the sold box each time he sells a box.

Notes

• If C[i] = 0, he sells a box. If C[i] > 0, he receives a box containing C[i] chocolates.
• It is confirmed that he gets a buyer only when he has a non-empty stack.
• The capacity of the stack is infinite.

Example 1

Assumptions

Input

• N = 4
• C = [2, 1, 0, 0]

Output: 1 2

Approach

After the first two minutes, the stack is [1, 2].

During the third minute, the box on the top having 1 chocolate is sold.

During the fourth minute, the box on the top having 2 chocolates is sold.

Function description

Complete the function solve() provided in the editor. The function takes the following 2 parameters and returns the solution.

• N: Represents the number of minutes
• C: Represents the description of boxes

Input format for custom testing

Note: Use this input format if you are testing against custom input or writing code in a language where we don’t provide boilerplate code

• The first line contains N denoting the number of minutes.
• The second line contains C denoting the array consisting of the box descriptions.

Output format

Print an array, representing the number of chocolates in the sold box each time you sell a box.

Constraints

\(1 \le N \le 10^5 \\ 0 \le C[i] \le 10^9\)