Help me in solving VOWMTRX problem

Problem Link: VOWMTRX Problem - CodeChef

help

If the string S contain exactly K vowels then no slicing can be done ,there fore zero slicing

Eg:
S->qareig
K->3
output->0
S contains exactly 3 vowels and k is also 3,so no slicing ans is 0. Then how is the answer is 1.