Problems
172
172
172
Examples
Input example #1
7 0 1 -2 1 0 0 3
Output example #1
0 1
Input example #4
5 -1 -2 0 2 1
Output example #4
NO
172
7 0 1 -2 1 0 0 3
0 1
5 -1 -2 0 2 1
NO