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 PHP7 (7.0.15) (judge verdict: Accepted)

<?php
$s = trim(fgets(STDIN));
$s = str_replace(array("\r\n","\r","\n"), '', $s);
$s = explode(" ", $s);

$count = $s[0];
$train_price = $s[2];
$taxi_price = $s[1];

echo min($train_price, $taxi_price * $count);