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 C (GCC 5.4.1) (judge verdict: Accepted)

#include <stdio.h>
#include <stdlib.h>

int main(void)
{
    int N, A, B;
    scanf("%d %d %d", &N, &A, &B);
    if (1 > N || 1 > A || 1 > B || N > 20 || A > 50 || B > 50)
    {
        exit(0);
    }
    else
    {
        int trainF = A * N;
        int taxiF = B;
        if (trainF < taxiF)
        {
            printf("%d",trainF);
        }
        else
        {
            printf("%d",taxiF);
        }
    }
}