1
10
10
20
20
20
10
20
2
2
2
5
1
1
1
1
0
1
1
0
0
0
1
0
0
0
0
1
1
1
1
1
0
0
1
0
0
0
0
0
1
0
0
0
0
1
0
3138
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
