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C - Extra Character

Score : $300$ points

Problem Statement

You are given strings $S$ and $T$. $S$ consists of lowercase English letters, and $T$ is obtained by inserting a lowercase English letter into $S$.

Find the position of the inserted character in $T$.
If there are multiple candidates, find any of them.

Constraints

• $1 \leq |S| \leq 5\times 10^5$
• $S$ consists of lowercase English letters.
• $T$ is obtained by inserting a lowercase English letter into $S$.

Input

The input is given from Standard Input in the following format:

$S$

$T$

Output

Print an integer $i$, representing that the inserted character is the $i$-th character from the beginning of $T$. If there are multiple possible answers, printing any of them is accepted.

atcoder
atcorder

5

The $5$-th character from the beginning of $T$, r, is inserted.

million
milllion

5

One of the $3$-rd, $4$-th, and $5$-th characters from the beginning of $T$ is inserted. Thus, printing any one of $3$, $4$, and $5$ is accepted.

vvwvw
vvvwvw

3