Funny Wu likes to give diamond turtles as gifts. He has turtles in his bag in either three colors: pink, white and green, or four colors: pink, white, green and yellow. He gave the turtles one by one from the bag, the color of the
ith turtle was
Si. The colors are presented as follows:
P -pink,
W- white,
G -green, < code>Y - yellow. If there were three colors of turtles in the bag, print
Three; if there were four colors, print
Four.
Input
The first line contains the number
N (
\(1<=N<=100\)) - the number of Turtles that Veselchak U. Vo took out the second line contains
N characters
Si - the colors of the turtles taken out. Each character
Si is equal to
P,
W,
G or
Y. There are always
i,
j and
k such that
Si = &# 39;
P',
Sj = '
W' and
Sk = '
G'.
Imprint
If there were three colors of turtles in the bag, print
Three; if there were four colors, print
Four.
Examples
| # |
Input |
Output |
| 1 |
6
G W Y P Y W |
Four |
| 2 |
9
G W W G P W P G G
| Three |
| 3 |
8
P Y W G Y W Y Y
| Four |