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import re
import sys
L = sys.stdin.read().strip().split("\n")
B = set()
for l in L:
x, y, z = 0, 0, 0
i = 0
while l:
if l.startswith("e"):
x += 1
y -= 1
l = l[1:]
elif l.startswith("se"):
y -= 1
z += 1
l = l[2:]
elif l.startswith("sw"):
x -= 1
z += 1
l = l[2:]
elif l.startswith("w"):
x -= 1
y += 1
l = l[1:]
elif l.startswith("nw"):
z -= 1
y += 1
l = l[2:]
elif l.startswith("ne"):
x += 1
z -= 1
l = l[2:]
else:
assert False
if (x, y, z) in B:
B.remove((x, y, z))
else:
B.add((x, y, z))
print(len(B))
for _ in range(100):
newB = set()
CHECK = set()
for x, y, z in B:
CHECK.add((x, y, z))
for dx, dy, dz in [
(1, -1, 0),
(0, -1, 1),
(-1, 0, 1),
(-1, 1, 0),
(0, 1, -1),
(1, 0, -1),
]:
CHECK.add((x + dx, y + dy, z + dz))
for x, y, z in CHECK:
nbr = 0
for dx, dy, dz in [
(1, -1, 0),
(0, -1, 1),
(-1, 0, 1),
(-1, 1, 0),
(0, 1, -1),
(1, 0, -1),
]:
if (x + dx, y + dy, z + dz) in B:
nbr += 1
if (x, y, z) in B and (nbr == 1 or nbr == 2):
newB.add((x, y, z))
if (x, y, z) not in B and nbr == 2:
newB.add((x, y, z))
B = newB
print(len(B))
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