input:

5050
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
1 11
1 12
1 13
1 14
1 15
1 16
1 17
1 18
1 19
1 20
1 21
1 22
1 23
1 24
1 25
1 26
1 27
1 28
1 29
1 30
1 31
1 32
1 33
1 34
1 35
1 36
1 37
1 38
1 39
1 40
1 41
1 42
1 43
1 44
1 45
1 46
1 47
1 48
1 49
1 50
1 51
1 52
1 53
1 54
1 55
1 56
1 57
1 58
1 59
1 60
1 61...

output:

2
3
3
4
5
5
5
6
5
5
6
5
6
7
6
7
8
7
7
7
7
7
8
7
8
9
8
8
7
7
7
8
7
8
9
8
8
8
7
8
9
8
9
10
9
9
9
8
9
10
9
10
11
10
10
9
9
9
9
9
9
10
9
9
9
9
9
10
9
10
11
10
10
10
9
10
11
10
11
12
11
11
10
10
10
10
10
10
10
9
9
9
9
9
10
9
10
11
10
10
3
3
4
5
5
5
6
5
5
6
5
6
7
6
7
8
7
7
7
7
7
8
7
8
9
8
8
7
7
7
8
7
8
9
...

result:

wrong answer 9th numbers differ - expected: '6', found: '5'