A12747. Nearest Interesting Number

Polycarp knows that if the sum of the digits of a number is divisible by $3$ , then the number itself is divisible by $3$ . He assumes that the numbers, the sum of the digits of which is divisible by $4$ , are also somewhat interesting. Thus, he considers a positive integer $n$ interesting if its sum of digits is divisible by $4$ .

Help Polycarp find the nearest larger or equal interesting number for the given number $a$ . That is, find the interesting number $n$ such that $n \ge a$ and $n$ is minimal.

The only line in the input contains an integer $a$ ( $1 \le a \le 1000$ ).

Print the nearest greater or equal interesting number for the given number $a$ . In other words, print the interesting number $n$ such that $n \ge a$ and $n$ is minimal.