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 <stdbool.h>

int main(void)
{
    int n, a, b;
    bool result = false;
    do{
        scanf("%d", &n);
        scanf("%d", &a);
        scanf("%d", &b);
        if((1 <= n && n <= 20) && (1 <= a && a <= 50) && (1 <= b && b <= 50)){
            result = true;
        }
    }while(result == false);

    int na = n * a;
    if (na <= b){
        printf("%d\n", na);
    }else{
        printf("%d\n", b);
    }
    return 0;
}