Piston Foundation
Helping Kids Become Collector Car Technicians
And the winning entry is…
0
6
1
9
3
2
0
7
3
0
8
7
2
4
6
4
0
3
4
6
2
6
9
7
2
9
9
0
6
0
2
8
6
4
8
3
0
2
2
4
6
2
7
8
6
7
2
4
9
5
9
1
0
0
2
1
7
2
3
3
7
8
5
8
8
7
6
4
4
1
9
9
7
9
0
1
6
0
8
5
1
5
2
3
5
3
5
7
4
3
5
1
0
2
8
4
8
6
3
1
9
0
0
7
7
5
2
9
2
0
0
9
1
9
9
4
2
0
6
4
8
3
1
4
8
8
9
5
1
2
8
9
0
0
1
1
1
6
6
4
2
8
1
4
8
9
7
4
1
9
2
3
2
6
4
3
3
8
5
3
0
2
4
6
1
9
5
7
6
7
0
2
1
2
6
2
7
6
8
2
7
5
4
8
4
2
6
9
8
4
4
6
4
9
9
0
5
1
2
4
1
7
6
7
0
2
0
7
5
3
4
6
8
7
3
0
1
2
0
6
8
3
6
0
3
8
0
5
6
1
1
6
1
8
1
6
1
6
1
0
7
5
8
1
6
5
2
7
9
0
2
4
3
8
2
1
8
6
1
1
6
9
3
9
9
1
3
4
8
7
6
7
9
2
0
4
0
0
0
9
4
5
7
3
7
7
2
3
2
9
1
3
8
9
6
2
2
1
2
8
6
1
9
2
1
5
0
5
8
1
9
6
4
8
1
0
0
0
1
9
7
0
9
3
5
6
3
1
5
6
7
1
3
9
5
4
4
9
6
6
7
2
0
7
2
5
4
7
5
3
0
7
2
2
4
8
3
2
0
5
9
4
4
7
3
1
4
0
1
5
4
5
6
1
9
8
3
5
2
7
3
0
7
2
1
0
2
8
4
7
3
4
1
0
5
4
9
6
1
8
0
0
1
9
6
0
6
0
0
1
9
7
2
1
6
5
6
1
7
4
6
9
0
2
5
8
1
7
8
2
5
3
0
1
4
6
6
5
7
3
2
4
0
8
9
3
7
1
4
4
8
1
3
2
2
6
3
6
0
5
8
0
6
9
5
2
0
7
6
8
8
3
1
3
3
4
7
0
8
9
5
0
1
6
9
7
3
3
8
1
3
1
8
0
2
8
3
0
8
8
2
7
3
7
2
2
8
4
5
9
0
9
3
9
5
0
7
0
1
9
7
3
1
1
6
9
1
6
2
6
2
5
7
5
8
8
0
6
8
5
3
5
5
6
1
5
3
4
8
0
0
1
8
9
2
3
4
5
1
0
0
9
1
1
2
4
6
4
8
1
6
1
3
8
3
4
7
2
7
9
8
0
5
8
9
4
6
2
8
9
2
1
7
7
0
3
7
0
6
8
8
8
7
9
4
6
7
9
3
6
7
0