CF1056E.Check Transcription

One of Arkady's friends works at a huge radio telescope. A few decades ago the telescope has sent a signal $s$ towards a faraway galaxy. Recently they've received a response $t$ which they believe to be a response from aliens! The scientists now want to check if the signal $t$ is similar to $s$ .

The original signal $s$ was a sequence of zeros and ones (everyone knows that binary code is the universe-wide language). The returned signal $t$ , however, does not look as easy as $s$ , but the scientists don't give up! They represented $t$ as a sequence of English letters and say that $t$ is similar to $s$ if you can replace all zeros in $s$ with some string $r_0$ and all ones in $s$ with some other string $r_1$ and obtain $t$ . The strings $r_0$ and $r_1$ must be different and non-empty.

Please help Arkady's friend and find the number of possible replacements for zeros and ones (the number of pairs of strings $r_0$ and $r_1$ ) that transform $s$ to $t$ .

The first line contains a string $s$ ( $2 \le |s| \le 10^5$ ) consisting of zeros and ones — the original signal.

The second line contains a string $t$ ( $1 \le |t| \le 10^6$ ) consisting of lowercase English letters only — the received signal.

It is guaranteed, that the string $s$ contains at least one '0' and at least one '1'.

Print a single integer — the number of pairs of strings $r_0$ and $r_1$ that transform $s$ to $t$ .

In case there are no such pairs, print $0$ .

In the first example, the possible pairs $(r_0, r_1)$ are as follows:

• "a", "aaaaa"
• "aa", "aaaa"
• "aaaa", "aa"
• "aaaaa", "a"

The pair "aaa", "aaa" is not allowed, since $r_0$ and $r_1$ must be different.

In the second example, the following pairs are possible:

• "ko", "kokotlin"
• "koko", "tlin"