n_tests 21
n_ex_tests 3
n_sample_tests 3
n_subtasks 3
subtask_end_1 5
subtask_score_1 30
subtask_end_2 11
subtask_score_2 20
subtask_end_3 21
subtask_score_3 50
input_pre expedition
input_suf in
output_pre expedition
output_suf ans
time_limit 1
memory_limit 512
output_limit 64
use_builtin_judger on
use_builtin_checker lcmp