QOJ.ac
QOJ
Time Limit:
2.5 s
Memory Limit:
1024 MB
Total points:
100
Korea IOI Team Selection Test (KOI TST) 2022, 2nd Selection Contest
D. 보안 시스템
The problem is available in the following languages:
C++98, C++11, C++14, C++17, C++20, C++23