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Problems

Number of operations

Number of operations

Time limit 1 second
Memory limit 128 MiB

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
Source SFE-2010 Variant 1