Problems
Number of operations
Number of operations
Find the total quantity of operations of addition (+), subtraction (-) and multiplication (*) in the given arithmetic expression.
Input data
The arithmetic expression is given in one line, that does not contain brackets and spaces. The number of symbols does not exceed 1000 in expression.
Output data
Print the number of the specified operations.
Examples
Input example #1
-1+2*3+a
Output example #1
3
Input example #8
+5-2+4-m/n*2:4
Output example #8
4