EBHQ_dir = "L5, R1, R3, L4, R3, R1, L3, L2, R3, L5, L1, L2, R5, L1, R5, R1, L4, R1, R3, L4, L1, R2, R5, R3, R1, R1, L1, R1, L1, L2, L1, R2, L5, L188, L4, R1, R4, L3, R47, R1, L1, R77, R5, L2, R1, L2, R4, L5, L1, R3, R187, L4, L3, L3, R2, L3, L5, L4, L4, R1, R5, L4, L3, L3, L3, L2, L5, R1, L2, R5, L3, L4, R4, L5, R3, R4, L2, L1, L4, R1, L3, R1, R3, L2, R1, R4, R5, L3, R5, R3, L3, R4, L2, L5, L1, L1, R3, R1, L4, R3, R3, L2, R5, R4, R1, R3, L4, R3, R3, L2, L4, L5, R1, L4, L5, R4, L2, L1, L3, L3, L5, R3, L4, L3, R5, R4, R2, L4, R2, R3, L3, R4, L1, L3, R2, R1, R5, L4, L5, L5, R4, L5, L2, L4, R4, R4, R1, L3, L2, L4, R3"
facing = 0 
distance = [0,0,0,0]
for d in EBHQ_dir.split(", "):
    if d[0] == "L":
        facing = (facing -1) % 4
        distance[facing] += int(d[1:])
    elif d[0] == "R":
        facing = (facing +1) % 4
        distance[facing] += int(d[1:])

print abs(distance[0]-distance[2]) + abs(distance[1]-distance[3])