Category: implementation

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') …

Javascript is not always a best option for some simple tasks that can be done via pure HTML or CSS. Javascript has platform issues i.e. different browsers might have …

Preloading images is useful when you like to access the images without delay when needed. For example, on mouse-over events over some buttons, the images has to be changed …

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. …