Birthday#1159

Birthday

1 second
128 megabytes
Very easy

Vasya saw David Copperfield's performance and decided to impress his classmates with his own tricks. One of his tricks is as follows: Vasya asks his classmate to multiply the day of birth by , the month number by , and then report the sum of these two products. Vasya then quickly tells the classmate's birth date.

Since a queue started to form and Vasya became tired, he asks you to write a program that can perform this trick for him.

Input

One number — the sum given to Vasya by his classmate.

Output

Print a single line — the classmate's date of birth in the format "DD / MM".

Examples

Example 1

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Example 17

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