#include <stdio.h>

/*
 * much faster than python version, though less optimized...
 *
 * to filter out duplicates and add numbers:
 * $ ./032 | sort -u | tr "\n" "+" | sed 's/+$/\n/' | bc
 *
 */

int is_pandigital(long int a, long int b, long int c)
{
	char digits[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
	char digit;
	int i;

	while(a > 0)
	{
		digit = a % 10;
		if(digit == 0 || digits[digit]++)
			return 0;
		a /= 10;
	}
	while(b > 0)
	{
		digit = b % 10;
		if(digit == 0 || digits[digit]++)
			return 0;
		b /= 10;
	}
	while(c > 0)
	{
		digit = c % 10;
		if(digit == 0 || digits[digit]++)
			return 0;
		c /= 10;
	}

	for(i=1; i<10; i++)
		if(digits[i] != 1)
			return 0;
	return 1;
}

int main(void)
{
	long int limit = 10000;
	long int a, b, c;
	for(a=2; a<limit; a++)
	{
		for(b=2; b<limit; b++)
		{
			c = a * b;
			if(c > limit)
				break;
			if(is_pandigital(a, b, c))
				printf("%ld\n", c);
		}
	}

	return 0;
}