Contest: Task: Related: TaskB

Score : $100$ points

There is always an integer in Takahashi's mind.

Initially, the integer in Takahashi's mind is $0$. Takahashi is now going to eat four symbols, each of which is `+`

or `-`

. When he eats `+`

, the integer in his mind increases by $1$; when he eats `-`

, the integer in his mind decreases by $1$.

The symbols Takahashi is going to eat are given to you as a string $S$. The $i$-th character in $S$ is the $i$-th symbol for him to eat.

Find the integer in Takahashi's mind after he eats all the symbols.

- The length of $S$ is $4$.
- Each character in $S$ is
`+`

or`-`

.

Input is given from Standard Input in the following format:

$S$

Print the integer in Takahashi's mind after he eats all the symbols.

+-++

2

- Initially, the integer in Takahashi's mind is $0$.
- The first integer for him to eat is
`+`

. After eating it, the integer in his mind becomes $1$. - The second integer to eat is
`-`

. After eating it, the integer in his mind becomes $0$. - The third integer to eat is
`+`

. After eating it, the integer in his mind becomes $1$. - The fourth integer to eat is
`+`

. After eating it, the integer in his mind becomes $2$.

Thus, the integer in Takahashi's mind after he eats all the symbols is $2$.

-+--

-2

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-4