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  1. Prepare
  2. Algorithms
  3. Implementation
  4. Strange Counter

Strange Counter

There is a strange counter. At the first second, it displays the number . Each second, the number displayed by decrements by until it reaches . In next second, the timer resets to and continues counting down. The diagram below shows the counter values for each time in the first three cycles:

Find and print the value displayed by the counter at time .

Function Description

Complete the strangeCounter function in the editor below.

strangeCounter has the following parameter(s):

  • int t: an integer

Returns

  • int: the value displayed at time

Input Format

A single integer, the value of .

Constraints

Subtask

  • for of the maximum score.

Sample Input

4

Sample Output

6

Explanation

Time marks the beginning of the second cycle. It is double the number displayed at the beginning of the first cycle:. This is shown in the diagram in the problem statement.