import os
import math

input = open(os.path.dirname(__file__) +
             "/input.txt", "r").readlines()


def distance(i: int, j: int):
    return math.dist([i], [j])


tails = []
tail = [0, 0]
head = [0, 0]  # x, y
for l in input:
    moves = l.split()
    print(moves)
    for steps in range(int(moves[1])):

        match moves[0]:
            case 'R':
                print(">")
                head = [head[0]+1, head[1]]
                if distance(head[0], tail[0]) > 1:
                    if (tail[1] != head[1]):
                        tail[1] = head[1]
                    tail[0] += 1
            case 'L':
                print("<")
                head = [head[0]-1, head[1]]
                if distance(tail[0], head[0]) > 1:
                    if tail[1] != head[1]:
                        tail[1] = head[1]
                    tail[0] -= 1
            case 'U':
                print("^")
                head = [head[0], head[1]+1]
                if distance(head[1], tail[1]) > 1:
                    if tail[0] != head[0]:
                        tail[0] = head[0]
                    tail[1] += 1
            case 'D':
                print("v")
                head = [head[0], head[1]-1]
                if distance(tail[1], head[1]) > 1:
                    if tail[0] != head[0]:
                        tail[0] = head[0]
                    tail[1] -= 1

        print(head)
        print(tail)
        tails.append(tail.copy())

list = []
for i in tails:
    list.append(str(i[0])+","+str(i[1]))

print(len(set(list)))