###descirption One day, Jerry found a strange typewriter. This typewriter has 2 input modes: pay p coins to append an arbitrary single letter to the back, or q coins to copy a substring that has already been outputted and paste it in the back. Jerry now wants to write a letter to Tom. The letter is a string S which contains only lowercase Latin letters. But as Jerry is not very wealthy, he wants to know the minimum number of coins he needs to write this letter.
###input This problem contains multiple test cases. Process until the end of file. For each test case, the first line contains string S $(|S|≤2×10^5,∑|S|≤5×10^6)$, consisting of only lowercase Latin letters. And the second line contains 2 integers p and q $(1≤p,q<2^{31})$.
###output For each test case, output one line containing the minimum number of coins Jerry needs to pay.