I was looking at contest 200 div.1, but problem B has no statement, it shows an empty page with the following sentence: "Statement is not available".
What's wrong?
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I was looking at contest 200 div.1, but problem B has no statement, it shows an empty page with the following sentence: "Statement is not available".
What's wrong?
Name |
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I can't help with this problem, but I can help you with the statements as I have solved it before. If I remember correctly, you were given a string
S
consisting of+
s and-
s, and you are to determine whether the string is valid or not. The following conditions help you determine whether or not a string is valid:S
is valid, then+S+
and-S-
are valid strings.For example strings
--
and+--+
are valid, where-+
is not.If the string is valid print
YES
, otherwise printNO
.Input limits:
|S| <= 10^5
, where|S|
is the length of the stringS
.Thanks :D
You can use Google Cache to view problem statement: http://webcache.googleusercontent.com/search?q=cache:http://codeforces.com/problemset/problem/343/B
Thanks