#include <iostream>
using namespace std;

int main()
{
	int a = 0, b = 0, c = 0;
	int num[10] = { 0 };
	num[0] = 1;
	for (int i = 1; i <= 9; i++)
	{
		a = i * 100;
		num[i] = 1;
		for (int j = 1; j <= 9; j++)
		{
			if (j != i)
			{
				a += j * 10;
				num[j] = 1;
				for (int k = 1; k <= 9; k++)
				{
					if (k != i && k != j)
					{
						a += k;
						num[k] = 1;
						b = a * 2;
						c = a * 3;
						int b1, b2, b3, c1, c2, c3;
						b1 = b / 100;
						b2 = (b - b1 * 100) / 10;
						b3 = b % 10;
						if (num[b1] != 1 && num[b2] != 1 && num[b3] != 1)
						{
							num[b1] = 1;
							num[b2] = 1;
							num[b3] = 1;
							c1 = c / 100;
							c2 = (c - c1 * 100) / 10;
							c3 = c % 10;
							if (num[c1] != 1 && num[c2] != 1 && num[c3] != 1 && b < 1000 && c < 1000)
							{
								cout << a << " " << b << " " << c << endl;
							}
							num[b1] = 0;
							num[b2] = 0;
							num[b3] = 0;
						}
						num[k] = 0;
						a -= k;
					}
				}
				num[j] = 0;
				a -= j * 10;
			}
		}
		num[i] = 0;

	}

	return 0;
}

大佬求组，代码AC了，但我自己运行的话结果一直无限循环，不知道问题出现在哪里……