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1918: G Time Limit: 1 Sec  Memory Limit: 128 MB Submit: 377  Solved: 95 SubmitStatusWeb Board Description 晴天也来寻宝啦，有一个m层的宝塔，只能从第一层开始一层一层的往上走，每层都有一个门，你需要用钥匙来打开门才能继续走，现在晴天有n把钥匙，编号为0-n-1，然后他要开始

1009 - Back to Underworld     PDF (English) Statistics Forum Time Limit: 4 second(s) Memory Limit: 32 MB The Vampires and Lykans are fighting each other to dea

A. NP-Hard Problem time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Recently, Pari and Arya did some researc