APP

x = 0

y = 0

n = 0

flag = True

cl_x = int(input())

cl_y = int(input())

s = input()

kol = int(input())

while s != 'стоп':

  if cl_x == x and cl_y == y:

    flag = False

  if s == 'север':

    y += kol

    if flag:

      n += 1

  elif s == 'запад':

    x -= kol

    if flag:

      n += 1

  elif s == 'юг':

    y -= kol

    if flag:

      n += 1

  elif s == 'восток':

    x += kol

    if flag:

      n += 1

  s = input()

  if s != 'стоп':

    kol = int(input())

print(n)