题目描述
Problem Statement
Consider an xy-plane. The positive direction of the x-axis is in the direction of east, and the positive direction of the y-axis is in the direction of north.
Takahashi is initially at point (x, y) = (0, 0) and facing east (in the positive direction of the x-axis).
You are given $a string T = t_1t_2\ldots t_N$ of length N consisting of S and R.
Takahashi will do the following move for each $i = 1, 2, \ldots, N$ in this order.
- If t_i = S, Takahashi advances in the current direction by distance 1.
- If t_i = R, Takahashi turns 90 degrees clockwise without changing his position. As a result, Takahashi's direction changes as follows.
- If he is facing east (in the positive direction of the x-axis) before he turns, he will face south (in the negative direction of the y-axis) after he turns.
- If he is facing south (in the negative direction of the y-axis) before he turns, he will face west (in the negative direction of the x-axis) after he turns.
- If he is facing west (in the negative direction of the x-axis) before he turns, he will face north (in the positive direction of the y-axis) after he turns.
- If he is facing north (in the positive direction of the y-axis) before he turns, he will face east (in the positive direction of the x-axis) after he turns.
Print the coordinates Takahashi is at after all the steps above have been done.
Input
Input is given from Standard Input in the following format:
N
T
Output
Print the coordinates (x, y) Takahashi is at after all the steps described in the Problem Statement have been completed, in the following format, with a space in between:
x y
Constraints
- $1 \leq N \leq 10^5$
- N is an integer.
- T is a string of length N consisting of S and R.
Sample Input 1
4
SSRS
Sample Output 1
2 -1
Takahashi is initially at (0, 0) facing east. Then, he moves as follows.
- t_1 = S, so he advances in the direction of east by distance 1, arriving at (1, 0).
- t_2 = S, so he advances in the direction of east by distance 1, arriving at (2, 0).
- t_3 = R, so he turns 90 degrees clockwise, resulting in facing south.
- t_4 = S, so he advances in the direction of south by distance 1, arriving at (2, -1).
Thus, Takahashi's final position, (x, y) = (2, -1), should be printed.
Sample Input 2
20
SRSRSSRSSSRSRRRRRSRR
Sample Output 2
0 1
输入格式
见题面 Input 部分
输出格式
见题面 Output 部分