能通过代码还原Python缩进吗？n = 0\nfor a in range(1,10):\n for b in range(1,10):\n for c in range(1,10):\n if a != b and a != c and b != c and a + b + c == 19:\n print(a,b,c)\n n += 1\n\nprint(\"组合有\"+str(n)+\"种\")