Problem:
Score : 100 points

Problem Statement

N of us are going on a trip, by train or taxi.

The train will cost each of us A yen (the currency of Japan).

The taxi will cost us a total of B yen.

How much is our minimum total travel expense?

Constraints

All values in input are integers.

1 \leq N \leq 20

1 \leq A \leq 50

1 \leq B \leq 50

Input

Input is given from Standard Input in the following format:

N A B

Output

Print an integer representing the minimum total travel expense.

Sample Input 1

4 2 9

Sample Output 1

8

The train will cost us 4 \times 2 = 8 yen, and the taxi will cost us 9 yen, so the minimum total travel expense is 8 yen.

Sample Input 2

4 2 7

Sample Output 2

7

Sample Input 3

4 2 8

Sample Output 3

8

Solution in Rust (1.15.1) (judge verdict: Accepted)

fn main() {
    #[allow(unused_imports)]
    use std::io::{Read, Write, BufWriter};
    let mut a = Vec::new();
    std::io::stdin().read_to_end(&mut a).unwrap();
    let a = String::from_utf8(a).unwrap();
    let mut a = a.split_whitespace();
    #[allow(unused_mut,unused_variables)]
    let mut b = BufWriter::new(std::io::stdout());
    macro_rules! yomu { () => (a.next().unwrap().parse().unwrap()) }
    #[allow(unused_macros)]
    macro_rules! kaku { ($($arg:tt)*) => (writeln!(b, $($arg)*).unwrap()) }
    #[allow(unused_imports)]
    use std::cmp::{min, max};

    let n: i32 = yomu!();
    let a: i32 = yomu!();
    let b: i32 = yomu!();
    println!("{}", min(n*a, b)); 
}