QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#201396#5154. ETASolitaryDream#AC ✓4ms10616kbC++171.2kb2023-10-05 14:06:132023-10-05 14:06:13

Judging History

你现在查看的是最新测评结果

  • [2023-10-05 14:06:13]
  • 评测
  • 测评结果:AC
  • 用时:4ms
  • 内存:10616kb
  • [2023-10-05 14:06:13]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;

#define int long long

int a,b;

vector<int> lev[100001];

signed main()
{
    scanf("%lld/%lld",&a,&b);
    if(a<b)
    {
        if(b!=a+1)
            puts("impossible");
        else
        {
            printf("%lld %lld\n",b,b-1);
            for(int i=2;i<=b;i++)
                printf("%lld %lld\n",1ll,i);
        }
    }
    else
    {
        int s=0,c=1;
        int x=0;
        lev[0].push_back(1);
        while(1)
        {
            x++;
            s+=x;
            c++;
            lev[x].push_back(x+1);
            if(c%b==0&&s>=c/b*a)
                break;
        }
        int la=x;
        while(s>c/b*a)
        {
            while(!lev[la].size())
                la--;
            auto f=lev[la].back();
            lev[la].pop_back();
            lev[la-1].push_back(f);
            s--;
        }
        // double w=0;
        // for(int i=0;i<=100000;i++)
        //     w+=lev[i].size()*i;
        // printf("%.10lf\n",w/(x+1));
        printf("%lld %lld\n",x+1,x);
        for(int i=1;i<=la;i++)
        {
            for(auto p:lev[i])
                printf("%lld %lld\n",lev[i-1][0],p);
        }
    }
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 1ms
memory: 6132kb

input:

1/2

output:

2 1
1 2

result:

ok 

Test #2:

score: 0
Accepted
time: 1ms
memory: 5948kb

input:

1/3

output:

impossible

result:

ok 

Test #3:

score: 0
Accepted
time: 1ms
memory: 6200kb

input:

7/4

output:

8 7
1 2
2 3
2 5
2 7
2 8
2 6
3 4

result:

ok 

Test #4:

score: 0
Accepted
time: 1ms
memory: 6208kb

input:

974/975

output:

975 974
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
...

result:

ok 

Test #5:

score: 0
Accepted
time: 0ms
memory: 6856kb

input:

943/346

output:

346 345
1 2
2 3
2 5
2 7
2 9
2 11
2 13
2 15
2 17
2 19
2 21
2 23
2 25
2 27
2 29
2 31
2 33
2 35
2 37
2 39
2 41
2 43
2 45
2 47
2 49
2 51
2 53
2 55
2 57
2 59
2 61
2 63
2 65
2 67
2 69
2 71
2 73
2 75
2 77
2 79
2 81
2 83
2 85
2 87
2 89
2 91
2 93
2 95
2 97
2 99
2 101
2 103
2 105
2 107
2 109
2 111
2 113
2 115...

result:

ok 

Test #6:

score: 0
Accepted
time: 1ms
memory: 6300kb

input:

912/7

output:

266 265
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
52 ...

result:

ok 

Test #7:

score: 0
Accepted
time: 0ms
memory: 6148kb

input:

1/1

output:

3 2
1 2
2 3

result:

ok 

Test #8:

score: 0
Accepted
time: 1ms
memory: 6080kb

input:

1/1000

output:

impossible

result:

ok 

Test #9:

score: 0
Accepted
time: 4ms
memory: 10616kb

input:

1000/999

output:

999 998
1 2
1 4
1 6
1 8
1 10
1 12
1 14
1 16
1 18
1 20
1 22
1 24
1 26
1 28
1 30
1 32
1 34
1 36
1 38
1 40
1 42
1 44
1 46
1 48
1 50
1 52
1 54
1 56
1 58
1 60
1 62
1 64
1 66
1 68
1 70
1 72
1 74
1 76
1 78
1 80
1 82
1 84
1 86
1 88
1 90
1 92
1 94
1 96
1 98
1 100
1 102
1 104
1 106
1 108
1 110
1 112
1 114
1 1...

result:

ok 

Test #10:

score: 0
Accepted
time: 1ms
memory: 6212kb

input:

999/1000

output:

1000 999
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...

result:

ok 

Test #11:

score: 0
Accepted
time: 1ms
memory: 6276kb

input:

1000/1

output:

2001 2000
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
5...

result:

ok 

Test #12:

score: 0
Accepted
time: 1ms
memory: 6236kb

input:

999/2

output:

1000 999
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
52...

result:

ok 

Test #13:

score: 0
Accepted
time: 1ms
memory: 6228kb

input:

1000/3

output:

669 668
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
52 ...

result:

ok 

Test #14:

score: 0
Accepted
time: 1ms
memory: 6096kb

input:

26/3

output:

21 20
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
13 16
13 18
13 20
13 21
13 19
13 17
13 15

result:

ok 

Test #15:

score: 0
Accepted
time: 1ms
memory: 6144kb

input:

79/9

output:

27 26
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
11 14
11 16
11 18
11 20
11 22
11 24
11 26
11 27
11 25
12 13
12 15
12 17
12 19
12 21
12 23

result:

ok 

Test #16:

score: 0
Accepted
time: 1ms
memory: 6092kb

input:

80/9

output:

27 26
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
11 14
11 16
11 18
11 20
11 22
11 24
12 13
12 15
12 17
12 19
12 21
12 23
12 25
12 27
12 26

result:

ok 

Test #17:

score: 0
Accepted
time: 1ms
memory: 6096kb

input:

998/999

output:

999 998
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
...

result:

ok 

Test #18:

score: 0
Accepted
time: 1ms
memory: 5948kb

input:

997/999

output:

impossible

result:

ok 

Test #19:

score: 0
Accepted
time: 1ms
memory: 5904kb

input:

997/1000

output:

impossible

result:

ok 

Test #20:

score: 0
Accepted
time: 1ms
memory: 6020kb

input:

99/200

output:

impossible

result:

ok 

Test #21:

score: 0
Accepted
time: 1ms
memory: 6152kb

input:

101/200

output:

impossible

result:

ok 

Test #22:

score: 0
Accepted
time: 1ms
memory: 6020kb

input:

99/199

output:

impossible

result:

ok 

Test #23:

score: 0
Accepted
time: 1ms
memory: 6288kb

input:

2/1

output:

5 4
1 2
2 3
3 4
4 5

result:

ok 

Test #24:

score: 0
Accepted
time: 1ms
memory: 6204kb

input:

200/99

output:

99 98
1 2
2 3
2 5
2 7
2 9
2 11
2 13
2 15
2 17
2 19
2 21
2 23
2 25
2 27
2 29
2 31
2 33
2 35
2 37
2 39
2 41
2 43
2 45
2 47
2 49
2 51
2 53
2 55
2 57
2 59
2 61
2 63
2 65
2 67
2 69
2 71
2 73
2 75
2 77
2 79
2 81
2 83
2 85
2 87
2 89
2 91
2 93
2 95
2 97
2 99
2 98
2 96
2 94
2 92
2 90
2 88
2 86
2 84
2 82
2 80...

result:

ok 

Test #25:

score: 0
Accepted
time: 1ms
memory: 6348kb

input:

200/101

output:

101 100
1 2
2 3
2 5
2 7
2 9
2 11
2 13
2 15
2 17
2 19
2 21
2 23
2 25
2 27
2 29
2 31
2 33
2 35
2 37
2 39
2 41
2 43
2 45
2 47
2 49
2 51
2 53
2 55
2 57
2 59
2 61
2 63
2 65
2 67
2 69
2 71
2 73
2 75
2 77
2 79
2 81
2 83
2 85
2 87
2 89
2 91
2 93
2 95
2 97
2 99
2 101
2 100
2 98
2 96
2 94
2 92
2 90
2 88
2 86
...

result:

ok 

Test #26:

score: 0
Accepted
time: 1ms
memory: 6340kb

input:

199/100

output:

100 99
1 2
2 3
2 5
2 7
2 9
2 11
2 13
2 15
2 17
2 19
2 21
2 23
2 25
2 27
2 29
2 31
2 33
2 35
2 37
2 39
2 41
2 43
2 45
2 47
2 49
2 51
2 53
2 55
2 57
2 59
2 61
2 63
2 65
2 67
2 69
2 71
2 73
2 75
2 77
2 79
2 81
2 83
2 85
2 87
2 89
2 91
2 93
2 95
2 97
2 99
2 100
2 98
2 96
2 94
2 92
2 90
2 88
2 86
2 84
2 ...

result:

ok 

Test #27:

score: 0
Accepted
time: 1ms
memory: 6152kb

input:

201/100

output:

100 99
1 2
2 3
2 5
2 7
2 9
2 11
2 13
2 15
2 17
2 19
2 21
2 23
2 25
2 27
2 29
2 31
2 33
2 35
2 37
2 39
2 41
2 43
2 45
2 47
2 49
2 51
2 53
2 55
2 57
2 59
2 61
2 63
2 65
2 67
2 69
2 71
2 73
2 75
2 77
2 79
2 81
2 83
2 85
2 87
2 89
2 91
2 93
2 95
2 97
2 99
2 100
2 98
2 96
2 94
2 92
2 90
2 88
2 86
2 84
2 ...

result:

ok 

Test #28:

score: 0
Accepted
time: 2ms
memory: 7608kb

input:

999/500

output:

500 499
1 2
2 3
2 5
2 7
2 9
2 11
2 13
2 15
2 17
2 19
2 21
2 23
2 25
2 27
2 29
2 31
2 33
2 35
2 37
2 39
2 41
2 43
2 45
2 47
2 49
2 51
2 53
2 55
2 57
2 59
2 61
2 63
2 65
2 67
2 69
2 71
2 73
2 75
2 77
2 79
2 81
2 83
2 85
2 87
2 89
2 91
2 93
2 95
2 97
2 99
2 101
2 103
2 105
2 107
2 109
2 111
2 113
2 115...

result:

ok 

Test #29:

score: 0
Accepted
time: 1ms
memory: 6364kb

input:

333/167

output:

167 166
1 2
2 3
2 5
2 7
2 9
2 11
2 13
2 15
2 17
2 19
2 21
2 23
2 25
2 27
2 29
2 31
2 33
2 35
2 37
2 39
2 41
2 43
2 45
2 47
2 49
2 51
2 53
2 55
2 57
2 59
2 61
2 63
2 65
2 67
2 69
2 71
2 73
2 75
2 77
2 79
2 81
2 83
2 85
2 87
2 89
2 91
2 93
2 95
2 97
2 99
2 101
2 103
2 105
2 107
2 109
2 111
2 113
2 115...

result:

ok 

Test #30:

score: 0
Accepted
time: 1ms
memory: 6136kb

input:

3/1

output:

7 6
1 2
2 3
3 4
4 5
5 6
6 7

result:

ok 

Test #31:

score: 0
Accepted
time: 1ms
memory: 6268kb

input:

301/100

output:

100 99
1 2
2 3
3 4
3 6
3 8
3 10
3 12
3 14
3 16
3 18
3 20
3 22
3 24
3 26
3 28
3 30
3 32
3 34
3 36
3 38
3 40
3 42
3 44
3 46
3 48
3 50
3 52
3 54
3 56
3 58
3 60
3 62
3 64
3 66
3 68
3 70
3 72
3 74
3 76
3 78
3 80
3 82
3 84
3 86
3 88
3 90
3 92
3 94
3 96
3 98
3 100
3 99
3 97
3 95
3 93
3 91
3 89
3 87
3 85
3 ...

result:

ok 

Test #32:

score: 0
Accepted
time: 0ms
memory: 6316kb

input:

299/100

output:

100 99
1 2
2 3
3 4
3 6
3 8
3 10
3 12
3 14
3 16
3 18
3 20
3 22
3 24
3 26
3 28
3 30
3 32
3 34
3 36
3 38
3 40
3 42
3 44
3 46
3 48
3 50
3 52
3 54
3 56
3 58
3 60
3 62
3 64
3 66
3 68
3 70
3 72
3 74
3 76
3 78
3 80
3 82
3 84
3 86
3 88
3 90
3 92
3 94
3 96
3 98
3 100
3 99
3 97
3 95
3 93
3 91
3 89
3 87
3 85
3 ...

result:

ok 

Test #33:

score: 0
Accepted
time: 0ms
memory: 6936kb

input:

1000/333

output:

333 332
1 2
2 3
3 4
3 6
3 8
3 10
3 12
3 14
3 16
3 18
3 20
3 22
3 24
3 26
3 28
3 30
3 32
3 34
3 36
3 38
3 40
3 42
3 44
3 46
3 48
3 50
3 52
3 54
3 56
3 58
3 60
3 62
3 64
3 66
3 68
3 70
3 72
3 74
3 76
3 78
3 80
3 82
3 84
3 86
3 88
3 90
3 92
3 94
3 96
3 98
3 100
3 102
3 104
3 106
3 108
3 110
3 112
3 114...

result:

ok 

Test #34:

score: 0
Accepted
time: 1ms
memory: 6376kb

input:

500/167

output:

167 166
1 2
2 3
3 4
3 6
3 8
3 10
3 12
3 14
3 16
3 18
3 20
3 22
3 24
3 26
3 28
3 30
3 32
3 34
3 36
3 38
3 40
3 42
3 44
3 46
3 48
3 50
3 52
3 54
3 56
3 58
3 60
3 62
3 64
3 66
3 68
3 70
3 72
3 74
3 76
3 78
3 80
3 82
3 84
3 86
3 88
3 90
3 92
3 94
3 96
3 98
3 100
3 102
3 104
3 106
3 108
3 110
3 112
3 114...

result:

ok 

Test #35:

score: 0
Accepted
time: 1ms
memory: 6132kb

input:

14/5

output:

10 9
1 2
2 3
3 4
3 6
3 8
4 5
4 7
4 9
4 10

result:

ok 

Test #36:

score: 0
Accepted
time: 1ms
memory: 6132kb

input:

16/5

output:

10 9
1 2
2 3
3 4
4 5
4 7
4 9
4 10
5 6
5 8

result:

ok 

Test #37:

score: 0
Accepted
time: 1ms
memory: 6100kb

input:

15/4

output:

12 11
1 2
2 3
3 4
4 5
5 6
5 8
5 10
5 12
5 11
5 9
5 7

result:

ok 

Test #38:

score: 0
Accepted
time: 1ms
memory: 6096kb

input:

5/2

output:

6 5
1 2
2 3
3 4
4 5
5 6

result:

ok 

Test #39:

score: 0
Accepted
time: 0ms
memory: 6224kb

input:

409/19

output:

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

result:

ok 

Test #40:

score: 0
Accepted
time: 0ms
memory: 6216kb

input:

818/39

output:

78 77
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
25 28
25 30
25 32
25 34
25 36
25 38
25 40
25 42
25 44
25 46
25 48
25 50
25 52
25 54
25 56
25 58
25 60
25 62
25 64
25 66
25 68
25 70
25 72
25 74
25 76
25 78
25 77...

result:

ok 

Test #41:

score: 0
Accepted
time: 0ms
memory: 6208kb

input:

409/20

output:

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

result:

ok 

Test #42:

score: 0
Accepted
time: 1ms
memory: 6212kb

input:

818/41

output:

41 40
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
38 41
39 40

result:

ok 

Test #43:

score: 0
Accepted
time: 1ms
memory: 6148kb

input:

819/38

output:

76 75
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
26 29
26 31
26 33
26 35
26 37
26 39
26 41
26 43
26 45
26 47
26 49
26 51
26 53
26 55
26 57
26 59
26 61
26 63
26 65
26 67
26 69
26 71
26 73
26 75
26 76
26 74...

result:

ok 

Test #44:

score: 0
Accepted
time: 1ms
memory: 6136kb

input:

21/1

output:

43 42
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43

result:

ok 

Test #45:

score: 0
Accepted
time: 0ms
memory: 6216kb

input:

819/40

output:

80 79
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
24 27
24 29
24 31
24 33
24 35
24 37
24 39
24 41
24 43
24 45
24 47
24 49
24 51
24 53
24 55
24 57
24 59
24 61
24 63
24 65
24 67
24 69
24 71
24 73
24 75
24 77
24 79
24 80...

result:

ok 

Test #46:

score: 0
Accepted
time: 0ms
memory: 6132kb

input:

819/41

output:

41 40
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
39 41

result:

ok 

Test #47:

score: 0
Accepted
time: 0ms
memory: 6220kb

input:

410/19

output:

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

result:

ok 

Test #48:

score: 0
Accepted
time: 0ms
memory: 6152kb

input:

820/39

output:

78 77
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
25 28
25 30
25 32
25 34
25 36
25 38
25 40
25 42
25 44
25 46
25 48
25 50
25 52
25 54
25 56
25 58
25 60
25 62
25 64
25 66
25 68
25 70
25 72
25 74
25 76
25 78
25 77...

result:

ok 

Test #49:

score: 0
Accepted
time: 0ms
memory: 6100kb

input:

41/2

output:

42 41
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42

result:

ok 

Test #50:

score: 0
Accepted
time: 1ms
memory: 6288kb

input:

20/1

output:

41 40
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41

result:

ok 

Test #51:

score: 0
Accepted
time: 0ms
memory: 6224kb

input:

821/38

output:

76 75
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
26 29
26 31
26 33
26 35
26 37
26 39
26 41
26 43
26 45
26 47
26 49
26 51
26 53
26 55
26 57
26 59
26 61
26 63
26 65
26 67
26 69
26 71
26 73
26 75
26 76
26 74...

result:

ok 

Test #52:

score: 0
Accepted
time: 0ms
memory: 6248kb

input:

821/39

output:

78 77
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
25 28
25 30
25 32
25 34
25 36
25 38
25 40
25 42
25 44
25 46
25 48
25 50
25 52
25 54
25 56
25 58
25 60
25 62
25 64
25 66
25 68
25 70
25 72
25 74
25 76
25 78
25 77...

result:

ok 

Test #53:

score: 0
Accepted
time: 0ms
memory: 6308kb

input:

821/40

output:

80 79
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
24 27
24 29
24 31
24 33
24 35
24 37
24 39
24 41
24 43
24 45
24 47
24 49
24 51
24 53
24 55
24 57
24 59
24 61
24 63
24 65
24 67
24 69
24 71
24 73
24 75
24 77
24 79
24 80...

result:

ok 

Test #54:

score: 0
Accepted
time: 0ms
memory: 6236kb

input:

821/41

output:

82 81
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
23 26
23 28
23 30
23 32
23 34
23 36
23 38
23 40
23 42
23 44
23 46
23 48
23 50
23 52
23 54
23 56
23 58
23 60
23 62
23 64
23 66
23 68
23 70
23 72
23 74
23 76
24 25
24 27
24 29...

result:

ok 

Test #55:

score: 0
Accepted
time: 0ms
memory: 6232kb

input:

512/1

output:

1025 1024
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
5...

result:

ok 

Test #56:

score: 0
Accepted
time: 1ms
memory: 6328kb

input:

729/1

output:

1459 1458
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
5...

result:

ok 

Test #57:

score: 0
Accepted
time: 0ms
memory: 6268kb

input:

625/1

output:

1251 1250
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
5...

result:

ok 

Test #58:

score: 0
Accepted
time: 1ms
memory: 5940kb

input:

127/626

output:

impossible

result:

ok 

Test #59:

score: 0
Accepted
time: 1ms
memory: 5908kb

input:

429/838

output:

impossible

result:

ok 

Test #60:

score: 0
Accepted
time: 1ms
memory: 6020kb

input:

563/710

output:

impossible

result:

ok 

Test #61:

score: 0
Accepted
time: 1ms
memory: 5948kb

input:

40/207

output:

impossible

result:

ok 

Test #62:

score: 0
Accepted
time: 1ms
memory: 6160kb

input:

145/298

output:

impossible

result:

ok 

Test #63:

score: 0
Accepted
time: 1ms
memory: 6068kb

input:

109/286

output:

impossible

result:

ok 

Test #64:

score: 0
Accepted
time: 1ms
memory: 6020kb

input:

219/305

output:

impossible

result:

ok 

Test #65:

score: 0
Accepted
time: 1ms
memory: 6080kb

input:

11/258

output:

impossible

result:

ok 

Test #66:

score: 0
Accepted
time: 1ms
memory: 5904kb

input:

59/105

output:

impossible

result:

ok 

Test #67:

score: 0
Accepted
time: 1ms
memory: 6024kb

input:

59/660

output:

impossible

result:

ok 

Test #68:

score: 0
Accepted
time: 1ms
memory: 6256kb

input:

209/210

output:

210 209
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
...

result:

ok 

Test #69:

score: 0
Accepted
time: 0ms
memory: 6196kb

input:

484/485

output:

485 484
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
...

result:

ok 

Test #70:

score: 0
Accepted
time: 1ms
memory: 6264kb

input:

178/179

output:

179 178
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
...

result:

ok 

Test #71:

score: 0
Accepted
time: 1ms
memory: 6112kb

input:

947/948

output:

948 947
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
...

result:

ok 

Test #72:

score: 0
Accepted
time: 1ms
memory: 6288kb

input:

635/636

output:

636 635
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
...

result:

ok 

Test #73:

score: 0
Accepted
time: 1ms
memory: 6288kb

input:

11/12

output:

12 11
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
1 11
1 12

result:

ok 

Test #74:

score: 0
Accepted
time: 1ms
memory: 6288kb

input:

451/452

output:

452 451
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
...

result:

ok 

Test #75:

score: 0
Accepted
time: 1ms
memory: 6128kb

input:

144/145

output:

145 144
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
...

result:

ok 

Test #76:

score: 0
Accepted
time: 1ms
memory: 6096kb

input:

478/479

output:

479 478
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
...

result:

ok 

Test #77:

score: 0
Accepted
time: 1ms
memory: 6096kb

input:

603/604

output:

604 603
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
...

result:

ok 

Test #78:

score: 0
Accepted
time: 1ms
memory: 6028kb

input:

34/897

output:

impossible

result:

ok 

Test #79:

score: 0
Accepted
time: 1ms
memory: 6204kb

input:

794/101

output:

101 100
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
8 11
8 13
8 15
8 17
8 19
8 21
8 23
8 25
8 27
8 29
8 31
8 33
8 35
8 37
8 39
8 41
8 43
8 45
8 47
8 49
8 51
8 53
8 55
8 57
8 59
8 61
8 63
8 65
8 67
8 69
8 71
8 73
8 75
8 77
8 79
8 81
8 83
8 85
8 87
8 89
8 91
8 93
8 95
8 97
8 99
8 101
8 100
8 98
8 96
8 94
8 92
8 9...

result:

ok 

Test #80:

score: 0
Accepted
time: 1ms
memory: 6300kb

input:

303/169

output:

169 168
1 2
1 4
1 6
1 8
1 10
1 12
1 14
1 16
1 18
1 20
1 22
1 24
1 26
1 28
1 30
1 32
1 34
1 36
1 38
1 40
1 42
1 44
1 46
1 48
1 50
1 52
1 54
1 56
1 58
1 60
1 62
1 64
1 66
2 3
2 5
2 7
2 9
2 11
2 13
2 15
2 17
2 19
2 21
2 23
2 25
2 27
2 29
2 31
2 33
2 35
2 37
2 39
2 41
2 43
2 45
2 47
2 49
2 51
2 53
2 55
...

result:

ok 

Test #81:

score: 0
Accepted
time: 1ms
memory: 5944kb

input:

539/734

output:

impossible

result:

ok 

Test #82:

score: 0
Accepted
time: 3ms
memory: 8232kb

input:

725/603

output:

603 602
1 2
1 4
1 6
1 8
1 10
1 12
1 14
1 16
1 18
1 20
1 22
1 24
1 26
1 28
1 30
1 32
1 34
1 36
1 38
1 40
1 42
1 44
1 46
1 48
1 50
1 52
1 54
1 56
1 58
1 60
1 62
1 64
1 66
1 68
1 70
1 72
1 74
1 76
1 78
1 80
1 82
1 84
1 86
1 88
1 90
1 92
1 94
1 96
1 98
1 100
1 102
1 104
1 106
1 108
1 110
1 112
1 114
1 1...

result:

ok 

Test #83:

score: 0
Accepted
time: 0ms
memory: 6028kb

input:

83/393

output:

impossible

result:

ok 

Test #84:

score: 0
Accepted
time: 0ms
memory: 6076kb

input:

713/855

output:

impossible

result:

ok 

Test #85:

score: 0
Accepted
time: 1ms
memory: 5900kb

input:

349/753

output:

impossible

result:

ok 

Test #86:

score: 0
Accepted
time: 1ms
memory: 6324kb

input:

505/87

output:

87 86
1 2
2 3
3 4
4 5
5 6
6 7
6 9
6 11
6 13
6 15
6 17
6 19
6 21
6 23
6 25
6 27
6 29
6 31
6 33
6 35
6 37
6 39
6 41
6 43
6 45
6 47
6 49
6 51
6 53
6 55
6 57
6 59
6 61
6 63
6 65
6 67
6 69
6 71
6 73
6 75
6 77
6 79
6 81
6 83
6 85
6 87
6 86
6 84
6 82
6 80
6 78
6 76
6 74
6 72
6 70
6 68
6 66
6 64
6 62
6 60
6...

result:

ok 

Test #87:

score: 0
Accepted
time: 1ms
memory: 6096kb

input:

631/690

output:

impossible

result:

ok 

Test #88:

score: 0
Accepted
time: 1ms
memory: 6280kb

input:

357/104

output:

104 103
1 2
2 3
3 4
3 6
3 8
3 10
3 12
3 14
3 16
3 18
3 20
3 22
3 24
3 26
3 28
3 30
3 32
3 34
3 36
3 38
3 40
3 42
3 44
3 46
3 48
3 50
3 52
3 54
3 56
3 58
3 60
3 62
3 64
3 66
3 68
3 70
3 72
3 74
3 76
3 78
3 80
3 82
3 84
3 86
3 88
3 90
3 92
3 94
3 96
3 98
3 100
3 102
4 5
4 7
4 9
4 11
4 13
4 15
4 17
4 1...

result:

ok 

Test #89:

score: 0
Accepted
time: 1ms
memory: 6096kb

input:

176/849

output:

impossible

result:

ok 

Test #90:

score: 0
Accepted
time: 1ms
memory: 5904kb

input:

616/757

output:

impossible

result:

ok 

Test #91:

score: 0
Accepted
time: 1ms
memory: 5900kb

input:

138/953

output:

impossible

result:

ok 

Test #92:

score: 0
Accepted
time: 0ms
memory: 6080kb

input:

152/389

output:

impossible

result:

ok 

Test #93:

score: 0
Accepted
time: 1ms
memory: 6100kb

input:

31/425

output:

impossible

result:

ok 

Test #94:

score: 0
Accepted
time: 0ms
memory: 5948kb

input:

91/550

output:

impossible

result:

ok 

Test #95:

score: 0
Accepted
time: 1ms
memory: 6012kb

input:

531/956

output:

impossible

result:

ok 

Test #96:

score: 0
Accepted
time: 1ms
memory: 6080kb

input:

283/737

output:

impossible

result:

ok 

Test #97:

score: 0
Accepted
time: 0ms
memory: 6148kb

input:

490/3

output:

330 329
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
52 ...

result:

ok 

Test #98:

score: 0
Accepted
time: 1ms
memory: 6160kb

input:

473/1

output:

947 946
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
52 ...

result:

ok 

Test #99:

score: 0
Accepted
time: 1ms
memory: 6156kb

input:

980/1

output:

1961 1960
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
5...

result:

ok 

Test #100:

score: 0
Accepted
time: 1ms
memory: 6156kb

input:

926/5

output:

375 374
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
52 ...

result:

ok 

Test #101:

score: 0
Accepted
time: 1ms
memory: 6176kb

input:

457/1

output:

915 914
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
52 ...

result:

ok 

Test #102:

score: 0
Accepted
time: 1ms
memory: 6252kb

input:

909/2

output:

910 909
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
52 ...

result:

ok 

Test #103:

score: 0
Accepted
time: 1ms
memory: 6148kb

input:

156/1

output:

313 312
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
52 ...

result:

ok 

Test #104:

score: 0
Accepted
time: 1ms
memory: 6244kb

input:

486/1

output:

973 972
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
52 ...

result:

ok 

Test #105:

score: 0
Accepted
time: 0ms
memory: 6296kb

input:

249/2

output:

250 249
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
52 ...

result:

ok 

Test #106:

score: 0
Accepted
time: 1ms
memory: 6196kb

input:

948/1

output:

1897 1896
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
5...

result:

ok