In this task, you are given a sentence in Polish language and its corresponding English translation. Here, your job is to output label "yes" if the translation is correct, otherwise output "no".

Input: Consider Input: Polish: Cały problem polega jednak na tym,  
 English: And then the other side stays the same as well.

Output: no


Input: Consider Input: Polish: Kąt odbicia jest równy kątowi padania. Więc on odbije się w ten sposób.  
 English: Incident angle is equal to reflected angle. So it would come back like that 

Output: yes


Input: Consider Input: Polish: cały ten majątek, nawet jeśli w pewnym stopniu  
 English: It's called Gauss-Jordan elimination, to find the


Output: no