Sonar Pulse Segment Tally

A submarine's sonar console prints the entire return signal from one sweep as a single line of text. Whenever the sonar detects nothing, the console prints the space character ' ' -- possibly many consecutive spaces if the silence lasts a while. Whenever the sonar detects part of an object, it prints some other printable character (a letter, digit, or a punctuation symbol used by the console's diagnostic firmware; never a space). A "pulse" is a maximal run of consecutive non-space characters in the printed line.

Given the printed line, which may be empty, may consist only of spaces, and may have leading or trailing spaces, determine how many pulses it contains.

Input format

A single line containing the string s. The line may be empty.

Output format

A single integer: the number of pulses in s.

Constraints

• 0 <= length of s <= 300
• s consists only of printable ASCII characters (the space character included)
• s never contains non-printable characters such as tabs

blip   blip  echo

3

0