Update nauuo.en.md

subjects/nauuo.en.md

@@ -15,7 +15,9 @@ This means that:
 
 There was a vote. There are people who voted positively, negatively, and randomly. 
 Figure out if the final answer depends on random people or not.
-If it does print '?'
+If it does, return '?', otherwise the result must be either '+', '-', or '0'
+Previous characters stand for outcome of the vote: positive/negative/draw.
+Input is always positive.
 
 Write a function, `Nauuo`, that returns final result of voting.