QOJ.ac
QOJ
Time Limit:
1 s
Memory Limit:
256 MB
Total points:
100
# 8151. 靠谱的预言家
统计
此題目在以下比賽中使用過：
This is a wrong problem. The intended solution is wrong or the statement is confusing. The problem is reserved
here for reference only. We do not recommend you to try to solve the problem.