Subsequence TimeLimit:1000MS MemoryLimit:65536K 64-bit integer IO format:%lld 问题描述: A sequence of N positive integers (10 < N < 100 000), each of them less than or equal 10000, and a positive integer S (S < 100 000 000) are given. Write a prog…
F - 概率(经典问题) Time Limit:2000MS Memory Limit:32768KB 64bit IO Format:%lld & %llu Description Sometimes some mathematical results are hard to believe. One of the common problems is the birthday paradox. Suppose you are in a party where there…