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#515. 와, 너 정말 핵심을 찔렀어!
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#515. 와, 너 정말 핵심을 찔렀어!
Level 4
Input
Output
Sample
Input 1
4
␣
4
↵
1
␣
2
␣
1
↵
1
␣
3
␣
2
↵
2
␣
4
␣
3
↵
3
␣
4
␣
4
↵
6
↵
1
␣
2
↵
1
␣
3
↵
1
␣
4
↵
2
␣
3
↵
2
␣
4
↵
3
␣
4
Output 1
2
↵
2
↵
2
↵
3
↵
3
↵
4
Time Limit
Memory Limit
Source
1000 ms
256 MB
