What will be the sum of the consonants of the word” RIVER”?

Read the following information carefully to answer the question .  In a certain code language, codes are decided on the basis of following rules and conditions. Rules:   I. All the consonants that appear before ‘N’ in alphabet series are to be coded as 0-9.(C =1, D= 2 and so on) 
II. All the consonants that appear after ‘N’ in alphabet series are to be coded as 0-9.(Q=1, R=2 and so on)  III. ‘N’ is to be coded as 3.  Conditions:
I. If a word starts with a consonant but ends with a vowel then all the vowels of that word are to be coded as ‘#’ and codes for last and first letters will be interchanged)  II. If a word has more than two vowels then the first vowel is to be coded as &, second vowel as *, third vowel as @ and then repeat the codes in the same sequence from fourth vowel onwards.  III. If in a word a consonant that appears after M is immediately preceded and followed by a vowel then all the vowels of that word are to be coded as ‘%’ and 1 is added to the original code of all consonants. (If after adding 1, the original code comes in double digit then add the digits until single digit is obtained))