#!/usr/bin/python3

x = 0 # -W, +E
y = 0 # -S, +N
dir = 0 # E=0, CCW

def dir2v(dir):
    if dir == 0:
        return (1, 0)
    elif dir == 90:
        return (0, 1)
    elif dir == 180:
        return (-1, 0)
    elif dir == 270:
        return (0, -1)
    else:
        raise RuntimeError(dir)

with open("input") as fh:
    for ln in fh:
        op = ln[0]
        arg = int(ln[1:])
        if op == "F":
            v = dir2v(dir)
            x += v[0] * arg
            y += v[1] * arg
        elif op == "L":
            dir = (dir + arg) % 360
        elif op == "R":
            dir = (dir - arg) % 360
        elif op == "E":
            x += arg
        elif op == "W":
            x -= arg
        elif op == "N":
            y += arg
        elif op == "S":
            y -= arg
        else:
            raise RuntimeError(op)
        print(op, arg, x, y, dir)

print(abs(x) + abs(y))