import java.util.stream.LongStream;

public class JI9036213 {

	static final int NUM_DIMENSIONS = 3; 
	static final int TOP_DIGIT = 3; 

	public static void main(String[] args) {
		LongStream permutations = LongStream.of(0L); 
		for (int dimension = 0; dimension < NUM_DIMENSIONS; dimension++) { 
			permutations = permutations.flatMap(tens -> LongStream 
					.rangeClosed(1, TOP_DIGIT).map(ones-> 10*tens + ones) 
					.peek(v->System.out.println("+ "+v))); 
		} 
		long first = permutations.findFirst().getAsLong(); 
		System.out.println("First is " + first); 
	}

}