No. For me — too.

No, it is almost unavailable for 5 or 10 minutes already.

Also, the problem statement of the problem which had "etc." instead of input and output format got updated.

A Little Elephant from the Zoo of Lviv likes lucky strings, i.e., the strings that consist only of the lucky digits 4 and 7. The Little Elephant calls some string T of the length M balanced if there exists at least one integer X (1 ≤ X ≤ M) such that the number of digits 4 in the substring T[1, X — 1] is equal to the number of digits 7 in the substring T[X, M]. For example, the string S = 7477447 is balanced since S[1, 4] = 7477 has 1 digit 4 and S[5, 7] = 447 has 1 digit 7. On the other hand, one can verify that the string S = 7 is not balanced. The Little Elephant has the string S of the length N. He wants to know the number of such pairs of integers (L; R) that 1 ≤ L ≤ R ≤ N and the substring S[L, R] is balanced. Help him to find this number. Notes. Let S be some lucky string. Then |S| denotes the length of the string S; S[i] (1 ≤ i ≤ |S|) denotes the ith character of S (the numeration of characters starts from 1); S[L, R] (1 ≤ L ≤ R ≤ |S|) denotes the string with the following sequence of characters: S[L], S[L + 1], ..., S[R], and is called a substring of S. For L > R we mean by S[L, R] an empty string. Input

The first line of the input file contains a single integer T, the number of test cases. Each of the following T lines contains one string, the string S for the corresponding test case. The input file does not contain any whitespaces. Output

For each test case output a single line containing the answer for this test case. Constraints

1 ≤ T ≤ 10 1 ≤ |S| ≤ 100000 S consists only of the lucky digits 4 and 7. Example

Input: 4 47 74 477 4747477

Output: 2 2 3 23

Explanation

In the first test case balance substrings are S[1, 1] = 4 and S[1, 2] = 47. In the second test case balance substrings are S[2, 2] = 4 and S[1, 2] = 74. Unfortunately, we can't provide you with the explanations of the third and the fourth test cases. You should figure it out by yourself. Please, don't ask about this in comments. Date: 2012-03-01 Time limit: 2s Source limit: 50000

I've already written solution for first version of this problem and then saw that it became another:)

It was a mistake on our side. We resolved it and made an announcement. We are sorry for this.

Unfortunately such problems with codechef are known. You should check announcements regularly.

I didn't read it because its name suspiciously didn't start with "Little Elephant and " :)

Нет, можно еще переносить строки вида 447744447744 и 77447774477

4444447777774447444

Тут выгоднее 4447444 в начало перенести.