Write a program that reads sequences of natural numbers, and for each one tells if it has two elements such that their sum is an odd number.

Input

Input consists of several sequences, each one in a line.
Each sequence consists of a natural number n,
followed by n natural numbers x_{1}, …, x_{n}.

Output

For each input sequence, print “yes” or “no”
depending on if it is possible to find two elements
x_{i} and x_{j} (with i ≠ j)
such that x_{i} + x_{j}
is an odd number.

Public test cases

**Input**

6 3 5 7 15 13 1 2 0 1

**Output**

no yes

Information

- Author
- Salvador Roura
- Language
- English
- Translator
- Carlos Molina
- Original language
- Catalan
- Other languages
- Catalan
- Official solutions
- C++
- User solutions
- C++