Coding Practice

OPEN telein.txt
N ← int(first line)
directions ← second line
CLOSE telein.txt

visited ←  empty set
position ←  0
add 0 to visited

FOR  direction in directions DO
IF direction = "T" DO
position ← 0
ELSE IF direction = "R" DO
position += 1
ELSE IF direction = "L" DO
position -= 1
END IF
add position to visited
END FOR

OPEN teleout.txt
write length of visited
CLOSE teleout.txt