2024-11-03 07:29:37
2024-11-03 01:56:30
2024-11-03 06:13:15
2024-11-03 09:27:08
设30只全是鸡,共有脚30*2=60,80-60=20,这20只是兔子剩下的脚。兔20/2=10,鸡30-10=20
2024-11-03 04:48:22