Note: on QOJ, the partial scoring in Subtask 2, 3, 4 is shown as separated subtasks. Subtask 2 ~ 4 corresponds to the test groups in Subtask 2 of the problem, Subtask 5 ~ 7 corresponds to the test groups in Subtask 3 of the problem, and Subtask 8 ~ 10 corresponds to the test groups in Subtask 4 of the problem.
QOJ.ac
QOJ
Time Limit:
2 s
Memory Limit:
1024 MB
Total points:
100