Death Knight Hero

There once was a champion of *WoW*

*Arthasdk* the name he was bestowed

He *Death Gripped* you to his side

His *Chains of Ice* stopped your stride

And *Obliterates* made you say “OWW!”

But one day our hero got puzzled

His *Death Grip* totally fizzled

In his darkest despair

He could barely hear

“OMG NOOB u *Chains of Iced* than u *Death
Gripped*”

You are given a recording of the abilities our hero used in his battles.

The first line of input will contain a single integer $n$ ($1 \leq n \leq 100$), the number of battles our hero played.

Then follow $n$ lines
each with a sequence of $k_
i$ ($1 \leq k_ i \leq
1000$) characters, each of which are either ’C’, ’D’ or
’O’. These denote the sequence of abilities used by our hero in
the $i$-th battle. ’C’ is
*Chains of Ice*, ’D’ is *Death Grip* and ’O’ is
*Obliterate*.

Output the number of battles our hero won, assuming he won
each battle where he did not use *Chains of Ice*
immediately followed by *Death Grip*.

Sample Input 1 | Sample Output 1 |
---|---|

3 DCOOO DODOCD COD |
2 |