lines = ((x[0], int(x[1:].strip())) for x in open("input.txt"))

pos = 0
drctn = 10+1j
targets = [1j, 1, -1j, -1]
target_str = "NESW"

for line in lines:
    if line[0] in target_str:
        drctn += targets[target_str.index(line[0])] * line[1]
    elif line[0] in "LR":
        times = (-line[1] if line[0] == "R" else line[1]) / 90
        drctn = drctn * 1j ** times
    else:
        pos += drctn * line[1]

print(int(abs(pos.real) + abs(pos.imag)))