sim aaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
0
0
0
1
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
1
2
2
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
1
2
3
aaaaaaaaaaaaaaaaaaaa
1
2
4
aaaaaaaaaaaaaaaaaaaaaaaaaaaa
a
a
5
aaaaaaaaaaaaaaaaaaaaaaaaaaaa
a
a
