学前儿童一般五分钟内做出来,重点本科大学生一般半小时做出来,教授一般一个小时以上做出来。你要用多久? 8809 = 6 5555 = 0 7111 = 0
8193 = 3 2172 = 0 8096 = 5 6666 = 4 1012 = 1 1111 = 0 7777 = 0 3213 = 0 9999 = 4
7662 = 2 7756 = 1 9313 = 1 6855 = 3 0000 = 4 9881 = 5 2222 = 0 5531 = 0 3333 = 0
2581 = ???
