Problem Statement

In AtCoder Kingdom, Gregorian calendar is used, and dates are written in the "year-month-day" order, or the "month-day" order without the year. For example, May $3$, $2018$ is written as $2018$-$5$-$3$, or $5$-$3$ without the year.

In this country, a date is called Takahashi when the month and the day are equal as numbers. For example, $5$-$5$ is Takahashi. How many days from $2018$-$1$-$1$ through $2018$-$a$-$b$ are Takahashi?

Constraints

• $a$ is an integer between $1$ and $12$ (inclusive).
• $b$ is an integer between $1$ and $31$ (inclusive).
• $2018$-$a$-$b$ is a valid date in Gregorian calendar.

Input

Input is given from Standard Input in the following format:

a b

Output

Print the number of days from $2018$-$1$-$1$ through $2018$-$a$-$b$ that are Takahashi.