## Editorial for An Animal Contest 5 P1 - Bamboo Cookies

Remember to use this editorial

**only**when stuck, and**not to copy-paste code from it**. Please be respectful to the problem author and editorialist.**Submitting an official solution before solving the problem yourself is a bannable offence.**Author:

#### Subtask 1 + 2

Any two pairs can be paired to sum to an even number as all equal or . The operation can be performed times.

**Time Complexity:**

#### Subtask 3

- If , the answer is .
- If , the answer can be or .
- If , the answer is .

**Time Complexity:**

#### Subtask 4

An even number can only be created by summing two even or two odd numbers. The answer is where and are the number of odd and even values in .

**Time Complexity:**

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