Tag: algorithm

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 …

In , the base 62 number conversion to base 10 is implemented. To extend the conversion to arbitrary bases, we can use base 10 as the intermediate base, i.e. …

Base62, like Base10 (decimal), Base16 (hexadecimal), is a number system. Base62 uses 62 possible ASCII letters, 0 – 9, a – z and A – Z, therefore it is often …

The problem is from codeforces: http://www.codeforces.com/problemset/problem/260/A This problem looks difficult at the first glance because of the input ranges are large for the given three integers. Using bruteforce to print …