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: Wrong Answer)

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

int main() {
	int number = 0;
	int train = 0;
	int taxi = 0;
	int numberoftaxi = 0;
	int counter = 0;

	scanf("%d", &number);
	rewind(stdin);
	scanf("%d", &train);
	rewind(stdin);
	scanf("%d", &taxi);
	rewind(stdin);

	counter = taxi;

	while (counter >= 4) {
		counter -= 4;
		numberoftaxi += 1;
	}

	if (numberoftaxi*taxi > number*train) {
		printf("%d", (number*train));
	}
	else {
		printf("%d", numberoftaxi*taxi);
	}


	return 0;
}