单点时限: 1.0 sec
内存限制: 512 MB
Count the occurrences of different words in several lines, and output in alphabetical order.
Words can be separated with at least one of the \n
, \t
, (space)
.
Lowercase ascii letters only. Sum length of all words will not exceed $500~000$.
aaa bbb ccc ddd aaa bbb eee aaa
aaa 3 bbb 2 ccc 1 ddd 1 eee 1