from math import cos, sin, radians

input = open('input12.txt', 'r')

navinstructions = input.read().split('\n')

pos = [0, 0]

waypoint = [10, 1]

positions = ['E', 'N', 'W', 'S']

# x = 0
# y = 0

# def movein(direction, value, x, y):
#     if direction == 'F':
#         return movein(pos, value, x, y)
#     elif direction == 'E':
#         x += value
#     elif direction == 'W':
#         x -= value
#     elif direction == 'N':
#         y += value
#     elif direction == 'S':
#         y -= value
#     return x, y

# def changedir(direction, value, pos, positions):
#     if direction == 'L':
#         return positions[(positions.index(pos) + int(value/90)) % 4]
#     elif direction == 'R':
#         return positions[(positions.index(pos) - int(value/90))]


def wayin(direction, value, waypoint):
    x, y = waypoint[0], waypoint[1]
    if direction == 'E':
        x += value
    elif direction == 'W':
        x -= value
    elif direction == 'N':
        y += value
    elif direction == 'S':
        y -= value
    return [x, y]

def changedir(direction, value, waypoint):
    x, y = waypoint[0], waypoint[1]
    if direction == 'L':
        return [x*cos(radians(value))-y*sin(radians(value)), x*sin(radians(value))+y*cos(radians(value))]
    elif direction == 'R':
        value = -value
        return [x*cos(radians(value))-y*sin(radians(value)), x*sin(radians(value))+y*cos(radians(value))]


def movein(value, pos, waypoint):
    dirx, diry = waypoint[0], waypoint[1]
    x, y = pos[0], pos[1]
    x += dirx * value
    y += diry * value
    return [x, y]



for navinstruction in navinstructions:
    instruction, value = navinstruction[0], int(navinstruction[1:])
    if instruction == 'F':
        pos = movein(value, pos, waypoint)
    elif instruction in positions:
        waypoint = wayin(instruction, value, waypoint)
    else:
        waypoint = changedir(instruction, value, waypoint)


print(abs(pos[0])+abs(pos[1]))