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In 2025, this problem was updated to use a simpler way of handling input and output, called standard input and output. You can read more about this change by
clicking here
.
Time Limit
Memory Limit
1 second
256 MiB
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Problem info
Subtask 1 (10 points) has 10 cases.
Subtask 2 (25 points) has 14 cases.
Subtask 3 (25 points) has 13 cases.
Subtask 4 (20 points) has 19 cases.
Subtask 5 (20 points) has 59 cases.