Tag: string algorithm

CRC (Cyclic Redundancy Checksum)  is a quick method to compute a value (or sometimes known as hash), that can be used to represent the data integrity. CRC32 computes a …

The problem is from codeforces: http://www.codeforces.com/problemset/problem/278/B The problem asks for the first sequence (sorted in alphabetic order) of character(s) that is not a substring of the given list of strings.The …

The problem is from codeforces: http://codeforces.com/contest/265/problem/A This is a pure simulation problem, no difficulty at all. If the current instruction matches the colour on the current stone, move one position …

The problem is from codeforces: http://www.codeforces.com/problemset/problem/262/A #!/usr/bin/env python n, k = map(int, raw_input().split()) s = raw_input().split() ans = 0 for x in s: ans += 1 if x.count('4') + x.count('7') …

The Problem is from codeforces: http://www.codeforces.com/problemset/problem/5/A In Python, there is no explicit EOF, therefore, to read until the end of input stream, one can check the input string, and check …