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Time Limit
Memory Limit
Input File
Output File
1 second
256 MiB
tagin.txt
tagout.txt
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Problem info
Subtask 1 (20 points) has 7 cases.
Subtask 2 (20 points) has 7 cases.
Subtask 3 (30 points) has 11 cases.
Subtask 4 (30 points) has 20 cases.