时间：2021-07-01 10:21:17 帮助过：16人阅读
time limit per test
1 second
memory limit per test
256 megabytes
input
standard input
output
standard output
The Berland State University is hosting a ballroom dance in celebration of its 100500-th anniversary! n boys and m girls are already busy rehearsing waltz, minuet, polonaise and quadrille moves.
We know that several boy&girl pairs are going to be invited to the ball. However, the partners' dancing skill in each pair must differ by at most one.
For each boy, we know his dancing skills. Similarly, for each girl we know her dancing skills. Write a code that can determine the largest possible number of pairs that can be formed from n boys and m girls.
Input
The first line contains an integer n (1?≤?n?≤?100) ? the number of boys. The second line contains sequence a1,?a2,?...,?an (1?≤?ai?≤?100), where ai is the i-th boy's dancing skill.
Similarly, the third line contains an integer m (1?≤?m?≤?100) ? the number of girls. The fourth line contains sequence b1,?b2,?...,?bm (1?≤?bj?≤?100), where bj is the j-th girl's dancing skill.
Output
Print a single number ? the required maximum possible number of pairs.
Sample test(s)
Input
41 4 6 255 1 5 7 9
Output
Input
41 2 3 4410 11 12 13
Output
Input
51 1 1 1 131 2 3
Output
二分匹配模板题
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