P.S. You may output either YES/NO or TAL/NIE in this task.
QOJ.ac
QOJ
Time Limit:
2 s
Memory Limit:
512 MB
Total points:
100
# 8104. Keyboard / Klawiatura
统计
该题目在以下比赛中使用过：
P.S. You may output either YES/NO or TAL/NIE in this task.