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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#201225#5154. ETABoulevardDust#AC ✓1ms7876kbC++201.1kb2023-10-05 13:16:322023-10-05 13:16:33

Judging History

你现在查看的是最新测评结果

  • [2023-10-05 13:16:33]
  • 评测
  • 测评结果:AC
  • 用时:1ms
  • 内存:7876kb
  • [2023-10-05 13:16:32]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 1000005;
int tag[N];
int c[N];
bool vis[N];
int a, b;
int gcd(int a, int b) {
	return b ? gcd(b, a % b) : a;
}

void work(int n, int sum) {
	for (int i = 2; i <= n; ++i) {
		int nu = n - i + 1;
		if (sum >= nu) {
			sum -= nu;
			tag[i] += 1;
		}
	}
	for (int i = 2; i <= n; ++i) tag[i] += tag[i - 1];
	vector<array<int, 2> > A;
	c[0] = 1;
	for (int i = 2; i <= n; ++i) {
		if (tag[i] != tag[i - 1]) {
			c[tag[i]] = i;
			vis[i] = 1;
		}
	}
	for (int k = 0; k < tag[n]; ++k) {
		A.push_back({c[k], c[k + 1]});
	}
	for (int i = 2; i <= n; ++i) if (!vis[i]) {
		A.push_back({c[tag[i] - 1], i});
	}
	printf("%d %d\n", n, (int)(A.size()));
	for (auto T : A) {
		printf("%d %d\n", T[0], T[1]);
	}
}

int main() {
	scanf("%d/%d", &a, &b);
	int g = gcd(a, b);
	a /= g, b /= g;
	for (int n = b, m = a; n <= 1000000; n += b, m += a) {
		ll low = n - 1, upp = 1LL * n * (n - 1) / 2;
		if (low <= m && m <= upp) {
			work(n, m);
			return 0;
		}
	}
	printf("impossible\n");
	return 0;
}

详细

Test #1:

score: 100
Accepted
time: 1ms
memory: 5820kb

input:

1/2

output:

2 1
1 2

result:

ok 

Test #2:

score: 0
Accepted
time: 1ms
memory: 3588kb

input:

1/3

output:

impossible

result:

ok 

Test #3:

score: 0
Accepted
time: 1ms
memory: 7812kb

input:

7/4

output:

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

result:

ok 

Test #4:

score: 0
Accepted
time: 1ms
memory: 7772kb

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: 1ms
memory: 7752kb

input:

943/346

output:

346 345
1 2
2 3
3 93
2 4
2 5
2 6
2 7
2 8
2 9
2 10
2 11
2 12
2 13
2 14
2 15
2 16
2 17
2 18
2 19
2 20
2 21
2 22
2 23
2 24
2 25
2 26
2 27
2 28
2 29
2 30
2 31
2 32
2 33
2 34
2 35
2 36
2 37
2 38
2 39
2 40
2 41
2 42
2 43
2 44
2 45
2 46
2 47
2 48
2 49
2 50
2 51
2 52
2 53
2 54
2 55
2 56
2 57
2 58
2 59
2 60
...

result:

ok 

Test #6:

score: 0
Accepted
time: 1ms
memory: 5700kb

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: 1ms
memory: 5724kb

input:

1/1

output:

3 2
1 2
2 3

result:

ok 

Test #8:

score: 0
Accepted
time: 0ms
memory: 3588kb

input:

1/1000

output:

impossible

result:

ok 

Test #9:

score: 0
Accepted
time: 1ms
memory: 5740kb

input:

1000/999

output:

999 998
1 2
2 998
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...

result:

ok 

Test #10:

score: 0
Accepted
time: 1ms
memory: 5780kb

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: 5740kb

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: 0ms
memory: 5808kb

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: 5732kb

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: 0ms
memory: 7772kb

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 15
13 16
13 17
13 18
13 19
13 20
13 21

result:

ok 

Test #15:

score: 0
Accepted
time: 1ms
memory: 7744kb

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
12 22
11 13
11 14
11 15
11 16
11 17
11 18
11 19
11 20
11 21
12 23
12 24
12 25
12 26
12 27

result:

ok 

Test #16:

score: 0
Accepted
time: 1ms
memory: 5820kb

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
12 19
11 13
11 14
11 15
11 16
11 17
11 18
12 20
12 21
12 22
12 23
12 24
12 25
12 26
12 27

result:

ok 

Test #17:

score: 0
Accepted
time: 1ms
memory: 5784kb

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: 0ms
memory: 3652kb

input:

997/999

output:

impossible

result:

ok 

Test #19:

score: 0
Accepted
time: 1ms
memory: 3616kb

input:

997/1000

output:

impossible

result:

ok 

Test #20:

score: 0
Accepted
time: 0ms
memory: 3524kb

input:

99/200

output:

impossible

result:

ok 

Test #21:

score: 0
Accepted
time: 0ms
memory: 3612kb

input:

101/200

output:

impossible

result:

ok 

Test #22:

score: 0
Accepted
time: 0ms
memory: 3616kb

input:

99/199

output:

impossible

result:

ok 

Test #23:

score: 0
Accepted
time: 0ms
memory: 5640kb

input:

2/1

output:

5 4
1 2
2 3
3 4
4 5

result:

ok 

Test #24:

score: 0
Accepted
time: 0ms
memory: 7816kb

input:

200/99

output:

99 98
1 2
2 3
3 95
2 4
2 5
2 6
2 7
2 8
2 9
2 10
2 11
2 12
2 13
2 14
2 15
2 16
2 17
2 18
2 19
2 20
2 21
2 22
2 23
2 24
2 25
2 26
2 27
2 28
2 29
2 30
2 31
2 32
2 33
2 34
2 35
2 36
2 37
2 38
2 39
2 40
2 41
2 42
2 43
2 44
2 45
2 46
2 47
2 48
2 49
2 50
2 51
2 52
2 53
2 54
2 55
2 56
2 57
2 58
2 59
2 60
2 ...

result:

ok 

Test #25:

score: 0
Accepted
time: 1ms
memory: 5700kb

input:

200/101

output:

101 100
1 2
2 3
3 101
2 4
2 5
2 6
2 7
2 8
2 9
2 10
2 11
2 12
2 13
2 14
2 15
2 16
2 17
2 18
2 19
2 20
2 21
2 22
2 23
2 24
2 25
2 26
2 27
2 28
2 29
2 30
2 31
2 32
2 33
2 34
2 35
2 36
2 37
2 38
2 39
2 40
2 41
2 42
2 43
2 44
2 45
2 46
2 47
2 48
2 49
2 50
2 51
2 52
2 53
2 54
2 55
2 56
2 57
2 58
2 59
2 60...

result:

ok 

Test #26:

score: 0
Accepted
time: 0ms
memory: 5824kb

input:

199/100

output:

100 99
1 2
2 3
3 99
2 4
2 5
2 6
2 7
2 8
2 9
2 10
2 11
2 12
2 13
2 14
2 15
2 16
2 17
2 18
2 19
2 20
2 21
2 22
2 23
2 24
2 25
2 26
2 27
2 28
2 29
2 30
2 31
2 32
2 33
2 34
2 35
2 36
2 37
2 38
2 39
2 40
2 41
2 42
2 43
2 44
2 45
2 46
2 47
2 48
2 49
2 50
2 51
2 52
2 53
2 54
2 55
2 56
2 57
2 58
2 59
2 60
2...

result:

ok 

Test #27:

score: 0
Accepted
time: 0ms
memory: 7776kb

input:

201/100

output:

100 99
1 2
2 3
3 97
2 4
2 5
2 6
2 7
2 8
2 9
2 10
2 11
2 12
2 13
2 14
2 15
2 16
2 17
2 18
2 19
2 20
2 21
2 22
2 23
2 24
2 25
2 26
2 27
2 28
2 29
2 30
2 31
2 32
2 33
2 34
2 35
2 36
2 37
2 38
2 39
2 40
2 41
2 42
2 43
2 44
2 45
2 46
2 47
2 48
2 49
2 50
2 51
2 52
2 53
2 54
2 55
2 56
2 57
2 58
2 59
2 60
2...

result:

ok 

Test #28:

score: 0
Accepted
time: 1ms
memory: 5772kb

input:

999/500

output:

500 499
1 2
2 3
3 499
2 4
2 5
2 6
2 7
2 8
2 9
2 10
2 11
2 12
2 13
2 14
2 15
2 16
2 17
2 18
2 19
2 20
2 21
2 22
2 23
2 24
2 25
2 26
2 27
2 28
2 29
2 30
2 31
2 32
2 33
2 34
2 35
2 36
2 37
2 38
2 39
2 40
2 41
2 42
2 43
2 44
2 45
2 46
2 47
2 48
2 49
2 50
2 51
2 52
2 53
2 54
2 55
2 56
2 57
2 58
2 59
2 60...

result:

ok 

Test #29:

score: 0
Accepted
time: 1ms
memory: 5720kb

input:

333/167

output:

167 166
1 2
2 3
3 166
2 4
2 5
2 6
2 7
2 8
2 9
2 10
2 11
2 12
2 13
2 14
2 15
2 16
2 17
2 18
2 19
2 20
2 21
2 22
2 23
2 24
2 25
2 26
2 27
2 28
2 29
2 30
2 31
2 32
2 33
2 34
2 35
2 36
2 37
2 38
2 39
2 40
2 41
2 42
2 43
2 44
2 45
2 46
2 47
2 48
2 49
2 50
2 51
2 52
2 53
2 54
2 55
2 56
2 57
2 58
2 59
2 60...

result:

ok 

Test #30:

score: 0
Accepted
time: 0ms
memory: 7864kb

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: 0ms
memory: 5728kb

input:

301/100

output:

100 99
1 2
2 3
3 4
4 94
3 5
3 6
3 7
3 8
3 9
3 10
3 11
3 12
3 13
3 14
3 15
3 16
3 17
3 18
3 19
3 20
3 21
3 22
3 23
3 24
3 25
3 26
3 27
3 28
3 29
3 30
3 31
3 32
3 33
3 34
3 35
3 36
3 37
3 38
3 39
3 40
3 41
3 42
3 43
3 44
3 45
3 46
3 47
3 48
3 49
3 50
3 51
3 52
3 53
3 54
3 55
3 56
3 57
3 58
3 59
3 60
3...

result:

ok 

Test #32:

score: 0
Accepted
time: 1ms
memory: 7760kb

input:

299/100

output:

100 99
1 2
2 3
3 4
4 96
3 5
3 6
3 7
3 8
3 9
3 10
3 11
3 12
3 13
3 14
3 15
3 16
3 17
3 18
3 19
3 20
3 21
3 22
3 23
3 24
3 25
3 26
3 27
3 28
3 29
3 30
3 31
3 32
3 33
3 34
3 35
3 36
3 37
3 38
3 39
3 40
3 41
3 42
3 43
3 44
3 45
3 46
3 47
3 48
3 49
3 50
3 51
3 52
3 53
3 54
3 55
3 56
3 57
3 58
3 59
3 60
3...

result:

ok 

Test #33:

score: 0
Accepted
time: 1ms
memory: 7820kb

input:

1000/333

output:

333 332
1 2
2 3
3 4
4 327
3 5
3 6
3 7
3 8
3 9
3 10
3 11
3 12
3 13
3 14
3 15
3 16
3 17
3 18
3 19
3 20
3 21
3 22
3 23
3 24
3 25
3 26
3 27
3 28
3 29
3 30
3 31
3 32
3 33
3 34
3 35
3 36
3 37
3 38
3 39
3 40
3 41
3 42
3 43
3 44
3 45
3 46
3 47
3 48
3 49
3 50
3 51
3 52
3 53
3 54
3 55
3 56
3 57
3 58
3 59
3 60...

result:

ok 

Test #34:

score: 0
Accepted
time: 1ms
memory: 7748kb

input:

500/167

output:

167 166
1 2
2 3
3 4
4 163
3 5
3 6
3 7
3 8
3 9
3 10
3 11
3 12
3 13
3 14
3 15
3 16
3 17
3 18
3 19
3 20
3 21
3 22
3 23
3 24
3 25
3 26
3 27
3 28
3 29
3 30
3 31
3 32
3 33
3 34
3 35
3 36
3 37
3 38
3 39
3 40
3 41
3 42
3 43
3 44
3 45
3 46
3 47
3 48
3 49
3 50
3 51
3 52
3 53
3 54
3 55
3 56
3 57
3 58
3 59
3 60...

result:

ok 

Test #35:

score: 0
Accepted
time: 1ms
memory: 7812kb

input:

14/5

output:

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

result:

ok 

Test #36:

score: 0
Accepted
time: 1ms
memory: 7784kb

input:

16/5

output:

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

result:

ok 

Test #37:

score: 0
Accepted
time: 0ms
memory: 7772kb

input:

15/4

output:

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

result:

ok 

Test #38:

score: 0
Accepted
time: 0ms
memory: 5704kb

input:

5/2

output:

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

result:

ok 

Test #39:

score: 0
Accepted
time: 1ms
memory: 5740kb

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
30 49
29 31
29 32
29 33
29 34
29 35
29 36
29 37
29 38
29 39
29 40
29 41
29 42
29 43
29 44
29 45
29 46
29 47
29 48
30 50
30 51
30 52
30 53...

result:

ok 

Test #40:

score: 0
Accepted
time: 1ms
memory: 7776kb

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
26 68
25 27
25 28
25 29
25 30
25 31
25 32
25 33
25 34
25 35
25 36
25 37
25 38
25 39
25 40
25 41
25 42
25 43
25 44
25 45
25 46
25 47
25 48
25 49
25 50
25 51
25 52...

result:

ok 

Test #41:

score: 0
Accepted
time: 0ms
memory: 7776kb

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
27 43
26 28
26 29
26 30
26 31
26 32
26 33
26 34
26 35
26 36
26 37
26 38
26 39
26 40
26 41
26 42
27 44
27 45
27 46
27 47
27 48
27 49
27 50
27 51
27 52
27 53...

result:

ok 

Test #42:

score: 0
Accepted
time: 0ms
memory: 5772kb

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
39 41
38 40

result:

ok 

Test #43:

score: 0
Accepted
time: 1ms
memory: 5728kb

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
27 64
26 28
26 29
26 30
26 31
26 32
26 33
26 34
26 35
26 36
26 37
26 38
26 39
26 40
26 41
26 42
26 43
26 44
26 45
26 46
26 47
26 48
26 49
26 50
26 51
26 52...

result:

ok 

Test #44:

score: 0
Accepted
time: 1ms
memory: 5716kb

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: 1ms
memory: 7780kb

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
25 63
24 26
24 27
24 28
24 29
24 30
24 31
24 32
24 33
24 34
24 35
24 36
24 37
24 38
24 39
24 40
24 41
24 42
24 43
24 44
24 45
24 46
24 47
24 48
24 49
24 50
24 51
24 52...

result:

ok 

Test #46:

score: 0
Accepted
time: 0ms
memory: 7744kb

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: 1ms
memory: 7768kb

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
30 46
29 31
29 32
29 33
29 34
29 35
29 36
29 37
29 38
29 39
29 40
29 41
29 42
29 43
29 44
29 45
30 47
30 48
30 49
30 50
30 51
30 52
30 53...

result:

ok 

Test #48:

score: 0
Accepted
time: 0ms
memory: 7780kb

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
26 64
25 27
25 28
25 29
25 30
25 31
25 32
25 33
25 34
25 35
25 36
25 37
25 38
25 39
25 40
25 41
25 42
25 43
25 44
25 45
25 46
25 47
25 48
25 49
25 50
25 51
25 52...

result:

ok 

Test #49:

score: 0
Accepted
time: 1ms
memory: 7740kb

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: 5700kb

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: 1ms
memory: 5700kb

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
27 60
26 28
26 29
26 30
26 31
26 32
26 33
26 34
26 35
26 36
26 37
26 38
26 39
26 40
26 41
26 42
26 43
26 44
26 45
26 46
26 47
26 48
26 49
26 50
26 51
26 52...

result:

ok 

Test #52:

score: 0
Accepted
time: 0ms
memory: 5736kb

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
26 62
25 27
25 28
25 29
25 30
25 31
25 32
25 33
25 34
25 35
25 36
25 37
25 38
25 39
25 40
25 41
25 42
25 43
25 44
25 45
25 46
25 47
25 48
25 49
25 50
25 51
25 52...

result:

ok 

Test #53:

score: 0
Accepted
time: 1ms
memory: 7756kb

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
25 59
24 26
24 27
24 28
24 29
24 30
24 31
24 32
24 33
24 34
24 35
24 36
24 37
24 38
24 39
24 40
24 41
24 42
24 43
24 44
24 45
24 46
24 47
24 48
24 49
24 50
24 51
24 52...

result:

ok 

Test #54:

score: 0
Accepted
time: 1ms
memory: 5768kb

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
24 51
23 25
23 26
23 27
23 28
23 29
23 30
23 31
23 32
23 33
23 34
23 35
23 36
23 37
23 38
23 39
23 40
23 41
23 42
23 43
23 44
23 45
23 46
23 47
23 48
23 49
23 50
24 52
24 53...

result:

ok 

Test #55:

score: 0
Accepted
time: 0ms
memory: 7784kb

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: 5676kb

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: 7784kb

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: 0ms
memory: 3656kb

input:

127/626

output:

impossible

result:

ok 

Test #59:

score: 0
Accepted
time: 1ms
memory: 3584kb

input:

429/838

output:

impossible

result:

ok 

Test #60:

score: 0
Accepted
time: 0ms
memory: 3596kb

input:

563/710

output:

impossible

result:

ok 

Test #61:

score: 0
Accepted
time: 0ms
memory: 3592kb

input:

40/207

output:

impossible

result:

ok 

Test #62:

score: 0
Accepted
time: 1ms
memory: 3700kb

input:

145/298

output:

impossible

result:

ok 

Test #63:

score: 0
Accepted
time: 0ms
memory: 3588kb

input:

109/286

output:

impossible

result:

ok 

Test #64:

score: 0
Accepted
time: 0ms
memory: 3600kb

input:

219/305

output:

impossible

result:

ok 

Test #65:

score: 0
Accepted
time: 0ms
memory: 3604kb

input:

11/258

output:

impossible

result:

ok 

Test #66:

score: 0
Accepted
time: 1ms
memory: 3608kb

input:

59/105

output:

impossible

result:

ok 

Test #67:

score: 0
Accepted
time: 0ms
memory: 3600kb

input:

59/660

output:

impossible

result:

ok 

Test #68:

score: 0
Accepted
time: 1ms
memory: 5700kb

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: 7812kb

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: 7776kb

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: 7784kb

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: 7768kb

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: 5700kb

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: 7872kb

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: 7868kb

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: 7756kb

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: 7820kb

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: 0ms
memory: 3644kb

input:

34/897

output:

impossible

result:

ok 

Test #79:

score: 0
Accepted
time: 1ms
memory: 7780kb

input:

794/101

output:

101 100
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 80
8 10
8 11
8 12
8 13
8 14
8 15
8 16
8 17
8 18
8 19
8 20
8 21
8 22
8 23
8 24
8 25
8 26
8 27
8 28
8 29
8 30
8 31
8 32
8 33
8 34
8 35
8 36
8 37
8 38
8 39
8 40
8 41
8 42
8 43
8 44
8 45
8 46
8 47
8 48
8 49
8 50
8 51
8 52
8 53
8 54
8 55
8 56
8 57
8 58
8 59
8 60
...

result:

ok 

Test #80:

score: 0
Accepted
time: 1ms
memory: 5704kb

input:

303/169

output:

169 168
1 2
2 35
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
2 36
2 37
2 38
2 39
2 40
2 41
2 42
2 43
2 44
2 45
2 46
2 47
2 48
2 49
2 50
2 51
2 52
2 53
2 54
2 55
2 56
2 57
2 58
2 59
2 60
2 61
...

result:

ok 

Test #81:

score: 0
Accepted
time: 0ms
memory: 3656kb

input:

539/734

output:

impossible

result:

ok 

Test #82:

score: 0
Accepted
time: 1ms
memory: 7844kb

input:

725/603

output:

603 602
1 2
2 481
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...

result:

ok 

Test #83:

score: 0
Accepted
time: 0ms
memory: 3676kb

input:

83/393

output:

impossible

result:

ok 

Test #84:

score: 0
Accepted
time: 0ms
memory: 3584kb

input:

713/855

output:

impossible

result:

ok 

Test #85:

score: 0
Accepted
time: 0ms
memory: 3608kb

input:

349/753

output:

impossible

result:

ok 

Test #86:

score: 0
Accepted
time: 1ms
memory: 7836kb

input:

505/87

output:

87 86
1 2
2 3
3 4
4 5
5 6
6 7
7 84
6 8
6 9
6 10
6 11
6 12
6 13
6 14
6 15
6 16
6 17
6 18
6 19
6 20
6 21
6 22
6 23
6 24
6 25
6 26
6 27
6 28
6 29
6 30
6 31
6 32
6 33
6 34
6 35
6 36
6 37
6 38
6 39
6 40
6 41
6 42
6 43
6 44
6 45
6 46
6 47
6 48
6 49
6 50
6 51
6 52
6 53
6 54
6 55
6 56
6 57
6 58
6 59
6 60
6 ...

result:

ok 

Test #87:

score: 0
Accepted
time: 1ms
memory: 3644kb

input:

631/690

output:

impossible

result:

ok 

Test #88:

score: 0
Accepted
time: 0ms
memory: 7756kb

input:

357/104

output:

104 103
1 2
2 3
3 4
4 54
3 5
3 6
3 7
3 8
3 9
3 10
3 11
3 12
3 13
3 14
3 15
3 16
3 17
3 18
3 19
3 20
3 21
3 22
3 23
3 24
3 25
3 26
3 27
3 28
3 29
3 30
3 31
3 32
3 33
3 34
3 35
3 36
3 37
3 38
3 39
3 40
3 41
3 42
3 43
3 44
3 45
3 46
3 47
3 48
3 49
3 50
3 51
3 52
3 53
4 55
4 56
4 57
4 58
4 59
4 60
4 61
...

result:

ok 

Test #89:

score: 0
Accepted
time: 0ms
memory: 3580kb

input:

176/849

output:

impossible

result:

ok 

Test #90:

score: 0
Accepted
time: 0ms
memory: 3584kb

input:

616/757

output:

impossible

result:

ok 

Test #91:

score: 0
Accepted
time: 0ms
memory: 3612kb

input:

138/953

output:

impossible

result:

ok 

Test #92:

score: 0
Accepted
time: 0ms
memory: 3616kb

input:

152/389

output:

impossible

result:

ok 

Test #93:

score: 0
Accepted
time: 1ms
memory: 3580kb

input:

31/425

output:

impossible

result:

ok 

Test #94:

score: 0
Accepted
time: 1ms
memory: 3608kb

input:

91/550

output:

impossible

result:

ok 

Test #95:

score: 0
Accepted
time: 1ms
memory: 3668kb

input:

531/956

output:

impossible

result:

ok 

Test #96:

score: 0
Accepted
time: 0ms
memory: 3676kb

input:

283/737

output:

impossible

result:

ok 

Test #97:

score: 0
Accepted
time: 1ms
memory: 5728kb

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: 0ms
memory: 7876kb

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: 7764kb

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: 5716kb

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: 7844kb

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: 7876kb

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: 0ms
memory: 7752kb

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: 0ms
memory: 7692kb

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: 1ms
memory: 7776kb

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: 0ms
memory: 5740kb

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