int n, m;;
	scanf("%d %d", &n, &m);
	int lst = 0;
	for (int i = 0; i < m; ++i)
	{
		int x;
		scanf("%d", &x);
		for (int j = 0; j < (x - lst); ++j)
		{
			printf("%d ", i + 1);
		}
		lst = x;
	}
	puts("");