t = int(input())
x1,y1,x2,y2 = map(int, input().split())

board = [["" for i in range(t)] for j in range(t)]
board[x1][y1] = "X"

direc = {"UL":[-2,-1], "UR":[-2,1], "R":[0,2], "LR":[2,1], "LL":[2,-1],"L":[0,-2]}

step = [(x1, y1)]

while(len(step) > 0):
    curx, cury = step[0][0], step[0][1]
    for d in ["UL","UR","R","LR","LL","L"]:
        t1, t2 = curx + direc[d][0], cury + direc[d][1]
        if (t1 >= 0 and t1 < t and t2 >= 0 and t2 < t and board[t1][t2] == ""):
            board[t1][t2] = d
            step.append((t1,t2))
    if board[x2][y2] != "":
        break
    del(step[0])

if board[x2][y2] == "":
    print("Impossible")
else:
    cnt = 0
    step = []
    x, y = x2, y2
    while (x != x1 or y!= y1):
        step.append(board[x][y])
        x, y = x-direc[board[x][y]][0], y-direc[board[x][y]][1]
        cnt += 1
    print(cnt)
    print(" ".join(step[::-1]))