Dominoes

Description:

Input:

The first line contains number n (1  ≤  n  ≤  100). Next n lines contains the dominoes. Each of these lines contains two numbers — the number of points (spots) on the left and the right half, correspondingly. The numbers of points (spots) are non-negative integers from 0 to 6.

Output:

Print "No solution", if it is impossible to arrange the dominoes in the required manner. If the solution exists, then describe any way to arrange the dominoes. You put the dominoes from left to right. In each of n lines print the index of the domino to put in the corresponding position and then, after a space, character "+" (if you don't need to turn the domino) or "–" (if you need to turn it).

Sample Input:

5
1 2
2 4
2 4
6 4
2 1

Sample Output:

2 -
1 -
5 -
3 +
4 -