题解 | #坐标移动#

我还以为要用自动机，结果用try语句就可以了

lst = input().split(';')[:-1]
x, y = (0, 0)
for i in lst:
    try:
        num = int(i[1:])
        if i[0] in 'ASDW':
            if i[0] == 'A': x -= num
            elif i[0] == 'S': y -= num
            elif i[0] == 'D': x += num
            elif i[0] == 'W': y += num
        else: pass
    except: pass
print(str(x)+','+str(y))