Category: codeforces

The problem is from codeforces: http://www.codeforces.com/problemset/problem/158/A It is summer. The temperature today in Sheffield is 25 degree. I got to say, I feel a bit sleepy in the afternoon. …

The problem is from codeforces: http://www.codeforces.com/problemset/problem/118/A Python is good at string manipulations. The problem is easy and the solution is straightforward. Just read the problem statement carefully… I didn’t …

The problem is from codeforces: http://www.codeforces.com/problemset/problem/158/C Using a stack will help solve this problem. Luckly, python supports stack structure by using list. The append() and pop() are used to …

The problem is from codeforces: http://www.codeforces.com/problemset/problem/102/B The input can be very large, you might wonder to use long arithmetic via arrays. However, it might be easier than you think. …

The problem is from codeforces http://www.codeforces.com/problemset/problem/82/A This is interesting because it seems like those guys thing: acting strange. This problem can be transformed into the following: 12345 1122334455 11112222333344445555 …