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time limit per test
3 seconds
memory limit per test
512 megabytes
input
standard input
output
standard output
Example
D. 
3
3 4
1 2 3
4 3 2 1
3 3
3 2 1
1 2 3
5 4
1 3 5 3 1
4 3 6 1
Output
0
4
6