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Time Limit
Memory Limit
Input File
Output File
2 seconds
256 MiB
Standard Input
Standard Output
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Problem info
Subtask 1 (5 points) has 9 cases.
Subtask 2 (15 points) has 22 cases.
Subtask 3 (23 points) has 23 cases.
Subtask 4 (25 points) has 27 cases.
Subtask 5 (25 points) has 17 cases.
Subtask 6 (7 points) has 47 cases.