4720: P9422 [蓝桥杯 2023 国 B] 合并数列

Memory Limit:128 MB Time Limit:1.000 S
Judge Style:Text Compare Creator:
Submit:0 Solved:0

Description

Input

Output

Sample Input Copy

4 3
1 2 3 4
1 5 4

Sample Output Copy

1

HINT