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Time Limit
Memory Limit
Input File
Output File
1.0 second
256.0 MiB
Standard Input
Standard Output
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Problem info
Subtask 1 (20 points) has 12 cases.
Subtask 2 (20 points) has 17 cases.
Subtask 3 (30 points) has 22 cases.
Subtask 4 (30 points) has 21 cases.