0 1 +1
0 2 -1
1 3 *2
2 4 /3
3 5 +1
4 5 +10

1 0 +999
0 0 -999

0 1 +1
0 2 +2
0 3 +3
1 4 *2
2 5 *3
3 6 +5
4 7 +2
5 7 -1
5 8 +1
6 8 -3
7 3 +1
7 9 *2
8 1 +2
8 9 /2

0 1 -1
1 0 -1
0 2 +1
2 0 +2
0 3 +1
3 0 +1
0 4 /2
4 0 *2
4 5 +1
5 4 *2
4 6 *2
6 4 +1
4 7 +1

