Subsequence

Input

Two nonempty strings $s$ and $t$, containing only letters and digits (|s| \leq 100, |t| \leq 300).

Output

If the string $s$ is a subsequence of the string $t$, output two lines: YES (without the quotes), and the minimum sum of indices of characters of string $t$ (indexing starts at $0$) that form the string $s$.

If the string $s$ is not a subsequence of the string $t$, output NO (without quotes).

Examples