A \ (1) is marked as 7 points, and 2 is marked as 0 points.

2 \ Sum of all numbers =15-2+5-1+10-3-2+12+4-5+6 =+39.

39 kilometers from the starting point (east of the starting point)

In the afternoon, * *15+2+5+1+10+3+2+12+4+5+6 = 65km, and it took 65* 1=65 yuan oil.