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: Wrong Answer)

use std::io::BufReader;
use std::cmp::min;

fn main() {
    let mut buffer = String::new();
    std::io::stdin().read_line(&mut buffer).unwrap();
    buffer = buffer.trim_right().to_owned();
    println!("{:?}", buffer);

    let (N, A, B) = {
        let mut ws = buffer.split_whitespace();
        let n: i32 = ws.next().unwrap().parse().unwrap();
        let a: i32 = ws.next().unwrap().parse().unwrap();
        let b: i32 = ws.next().unwrap().parse().unwrap();
        (n, a, b)
    };

    let result  = min(A*N, B);
    println!("{:?}", result);
}