QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#36185#1837. HamiltonianFroggyguaAC ✓2ms3716kbC++17970b2022-06-24 22:09:472022-06-24 22:09:49

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2022-06-24 22:09:49]
  • 评测
  • 测评结果：AC
  • 用时：2ms
  • 内存：3716kb
查看
  • [2022-06-24 22:09:47]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
int K,n;
vector<pair<int,int> > ans;
void Output(){
	cout<<n<<' '<<ans.size()<<'\n';
	for(auto [x,y]:ans){
		cout<<x<<' '<<y<<'\n';
	}
} 
int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	cin>>K;
	if(K==1){
		n=2;
		ans.emplace_back(1,2);
	}
	else if(K==2){
		n=4;
		ans.emplace_back(1,2);
		ans.emplace_back(1,3);
		ans.emplace_back(2,3);
		ans.emplace_back(3,4);
	}
	else if(K<=20){
		n=K;
		for(int i=1;i<=n-(n<=2);++i){
			ans.emplace_back(i,i%n+1);
		}
	}
	else{
		for(int x=3;x<=20;++x){
			for(int y=2;x+y<=20;++y){
				if(x*(x-1)/2-1+y-1+2*(x-1)==K){
					for(int i=1;i<=x;++i){
						for(int j=i+1;j<=x;++j){
							ans.emplace_back(i,j);
						}
					}
					for(int i=x;i<x+y;++i){
						ans.emplace_back(i,i+1);
					}
					ans.emplace_back(x+y,x-1);
					n=x+y;
					goto End;
				}
			}
		}
	}
	End:
		Output();
	return 0;
}
Source code, Language: C++17

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 2ms
memory: 3572kb

input:

1

output:

2 1
1 2

result:

ok correct

Test #2:

score: 0
Accepted
time: 1ms
memory: 3568kb

input:

2

output:

4 4
1 2
1 3
2 3
3 4

result:

ok correct

Test #3:

score: 0
Accepted
time: 2ms
memory: 3568kb

input:

3

output:

3 3
1 2
2 3
3 1

result:

ok correct

Test #4:

score: 0
Accepted
time: 2ms
memory: 3560kb

input:

4

output:

4 4
1 2
2 3
3 4
4 1

result:

ok correct

Test #5:

score: 0
Accepted
time: 2ms
memory: 3640kb

input:

5

output:

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

result:

ok correct

Test #6:

score: 0
Accepted
time: 2ms
memory: 3584kb

input:

6

output:

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

result:

ok correct

Test #7:

score: 0
Accepted
time: 0ms
memory: 3572kb

input:

7

output:

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

result:

ok correct

Test #8:

score: 0
Accepted
time: 0ms
memory: 3564kb

input:

8

output:

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

result:

ok correct

Test #9:

score: 0
Accepted
time: 1ms
memory: 3604kb

input:

9

output:

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

result:

ok correct

Test #10:

score: 0
Accepted
time: 2ms
memory: 3676kb

input:

10

output:

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

result:

ok correct

Test #11:

score: 0
Accepted
time: 2ms
memory: 3588kb

input:

11

output:

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

result:

ok correct

Test #12:

score: 0
Accepted
time: 2ms
memory: 3620kb

input:

12

output:

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

result:

ok correct

Test #13:

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

input:

13

output:

13 13
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 1

result:

ok correct

Test #14:

score: 0
Accepted
time: 2ms
memory: 3716kb

input:

14

output:

14 14
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 1

result:

ok correct

Test #15:

score: 0
Accepted
time: 2ms
memory: 3572kb

input:

15

output:

15 15
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 1

result:

ok correct

Test #16:

score: 0
Accepted
time: 2ms
memory: 3540kb

input:

16

output:

16 16
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 1

result:

ok correct

Test #17:

score: 0
Accepted
time: 2ms
memory: 3444kb

input:

17

output:

17 17
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 1

result:

ok correct

Test #18:

score: 0
Accepted
time: 2ms
memory: 3576kb

input:

18

output:

18 18
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 1

result:

ok correct

Test #19:

score: 0
Accepted
time: 2ms
memory: 3548kb

input:

19

output:

19 19
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 1

result:

ok correct

Test #20:

score: 0
Accepted
time: 2ms
memory: 3584kb

input:

20

output:

20 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
14 15
15 16
16 17
17 18
18 19
19 20
20 1

result:

ok correct

Test #21:

score: 0
Accepted
time: 2ms
memory: 3564kb

input:

21

output:

19 20
1 2
1 3
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 2

result:

ok correct

Test #22:

score: 0
Accepted
time: 2ms
memory: 3564kb

input:

22

output:

20 21
1 2
1 3
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 2

result:

ok correct

Test #23:

score: 0
Accepted
time: 2ms
memory: 3676kb

input:

23

output:

17 20
1 2
1 3
1 4
2 3
2 4
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 3

result:

ok correct

Test #24:

score: 0
Accepted
time: 2ms
memory: 3600kb

input:

24

output:

18 21
1 2
1 3
1 4
2 3
2 4
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 3

result:

ok correct

Test #25:

score: 0
Accepted
time: 2ms
memory: 3504kb

input:

25

output:

19 22
1 2
1 3
1 4
2 3
2 4
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 3

result:

ok correct

Test #26:

score: 0
Accepted
time: 2ms
memory: 3716kb

input:

26

output:

20 23
1 2
1 3
1 4
2 3
2 4
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 3

result:

ok correct

Test #27:

score: 0
Accepted
time: 2ms
memory: 3648kb

input:

27

output:

16 22
1 2
1 3
1 4
1 5
2 3
2 4
2 5
3 4
3 5
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 4

result:

ok correct

Test #28:

score: 0
Accepted
time: 2ms
memory: 3644kb

input:

28

output:

17 23
1 2
1 3
1 4
1 5
2 3
2 4
2 5
3 4
3 5
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 4

result:

ok correct

Test #29:

score: 0
Accepted
time: 0ms
memory: 3448kb

input:

29

output:

18 24
1 2
1 3
1 4
1 5
2 3
2 4
2 5
3 4
3 5
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 4

result:

ok correct

Test #30:

score: 0
Accepted
time: 2ms
memory: 3592kb

input:

30

output:

19 25
1 2
1 3
1 4
1 5
2 3
2 4
2 5
3 4
3 5
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 4

result:

ok correct

Test #31:

score: 0
Accepted
time: 1ms
memory: 3448kb

input:

31

output:

20 26
1 2
1 3
1 4
1 5
2 3
2 4
2 5
3 4
3 5
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 4

result:

ok correct

Test #32:

score: 0
Accepted
time: 2ms
memory: 3676kb

input:

32

output:

15 25
1 2
1 3
1 4
1 5
1 6
2 3
2 4
2 5
2 6
3 4
3 5
3 6
4 5
4 6
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 5

result:

ok correct

Test #33:

score: 0
Accepted
time: 0ms
memory: 3572kb

input:

33

output:

16 26
1 2
1 3
1 4
1 5
1 6
2 3
2 4
2 5
2 6
3 4
3 5
3 6
4 5
4 6
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 5

result:

ok correct

Test #34:

score: 0
Accepted
time: 0ms
memory: 3504kb

input:

34

output:

17 27
1 2
1 3
1 4
1 5
1 6
2 3
2 4
2 5
2 6
3 4
3 5
3 6
4 5
4 6
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 5

result:

ok correct

Test #35:

score: 0
Accepted
time: 2ms
memory: 3676kb

input:

35

output:

18 28
1 2
1 3
1 4
1 5
1 6
2 3
2 4
2 5
2 6
3 4
3 5
3 6
4 5
4 6
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 5

result:

ok correct

Test #36:

score: 0
Accepted
time: 2ms
memory: 3576kb

input:

36

output:

19 29
1 2
1 3
1 4
1 5
1 6
2 3
2 4
2 5
2 6
3 4
3 5
3 6
4 5
4 6
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 5

result:

ok correct

Test #37:

score: 0
Accepted
time: 2ms
memory: 3644kb

input:

37

output:

20 30
1 2
1 3
1 4
1 5
1 6
2 3
2 4
2 5
2 6
3 4
3 5
3 6
4 5
4 6
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 5

result:

ok correct

Test #38:

score: 0
Accepted
time: 2ms
memory: 3576kb

input:

38

output:

14 29
1 2
1 3
1 4
1 5
1 6
1 7
2 3
2 4
2 5
2 6
2 7
3 4
3 5
3 6
3 7
4 5
4 6
4 7
5 6
5 7
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 6

result:

ok correct

Test #39:

score: 0
Accepted
time: 2ms
memory: 3600kb

input:

39

output:

15 30
1 2
1 3
1 4
1 5
1 6
1 7
2 3
2 4
2 5
2 6
2 7
3 4
3 5
3 6
3 7
4 5
4 6
4 7
5 6
5 7
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 6

result:

ok correct

Test #40:

score: 0
Accepted
time: 2ms
memory: 3584kb

input:

40

output:

16 31
1 2
1 3
1 4
1 5
1 6
1 7
2 3
2 4
2 5
2 6
2 7
3 4
3 5
3 6
3 7
4 5
4 6
4 7
5 6
5 7
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 6

result:

ok correct

Test #41:

score: 0
Accepted
time: 2ms
memory: 3652kb

input:

41

output:

17 32
1 2
1 3
1 4
1 5
1 6
1 7
2 3
2 4
2 5
2 6
2 7
3 4
3 5
3 6
3 7
4 5
4 6
4 7
5 6
5 7
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 6

result:

ok correct

Test #42:

score: 0
Accepted
time: 2ms
memory: 3572kb

input:

42

output:

18 33
1 2
1 3
1 4
1 5
1 6
1 7
2 3
2 4
2 5
2 6
2 7
3 4
3 5
3 6
3 7
4 5
4 6
4 7
5 6
5 7
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 6

result:

ok correct

Test #43:

score: 0
Accepted
time: 2ms
memory: 3672kb

input:

43

output:

19 34
1 2
1 3
1 4
1 5
1 6
1 7
2 3
2 4
2 5
2 6
2 7
3 4
3 5
3 6
3 7
4 5
4 6
4 7
5 6
5 7
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 6

result:

ok correct

Test #44:

score: 0
Accepted
time: 2ms
memory: 3620kb

input:

44

output:

20 35
1 2
1 3
1 4
1 5
1 6
1 7
2 3
2 4
2 5
2 6
2 7
3 4
3 5
3 6
3 7
4 5
4 6
4 7
5 6
5 7
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 6

result:

ok correct

Test #45:

score: 0
Accepted
time: 2ms
memory: 3564kb

input:

45

output:

13 34
1 2
1 3
1 4
1 5
1 6
1 7
1 8
2 3
2 4
2 5
2 6
2 7
2 8
3 4
3 5
3 6
3 7
3 8
4 5
4 6
4 7
4 8
5 6
5 7
5 8
6 7
6 8
7 8
8 9
9 10
10 11
11 12
12 13
13 7

result:

ok correct

Test #46:

score: 0
Accepted
time: 2ms
memory: 3592kb

input:

46

output:

14 35
1 2
1 3
1 4
1 5
1 6
1 7
1 8
2 3
2 4
2 5
2 6
2 7
2 8
3 4
3 5
3 6
3 7
3 8
4 5
4 6
4 7
4 8
5 6
5 7
5 8
6 7
6 8
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 7

result:

ok correct

Test #47:

score: 0
Accepted
time: 2ms
memory: 3576kb

input:

47

output:

15 36
1 2
1 3
1 4
1 5
1 6
1 7
1 8
2 3
2 4
2 5
2 6
2 7
2 8
3 4
3 5
3 6
3 7
3 8
4 5
4 6
4 7
4 8
5 6
5 7
5 8
6 7
6 8
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 7

result:

ok correct

Test #48:

score: 0
Accepted
time: 2ms
memory: 3644kb

input:

48

output:

16 37
1 2
1 3
1 4
1 5
1 6
1 7
1 8
2 3
2 4
2 5
2 6
2 7
2 8
3 4
3 5
3 6
3 7
3 8
4 5
4 6
4 7
4 8
5 6
5 7
5 8
6 7
6 8
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 7

result:

ok correct

Test #49:

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

input:

49

output:

17 38
1 2
1 3
1 4
1 5
1 6
1 7
1 8
2 3
2 4
2 5
2 6
2 7
2 8
3 4
3 5
3 6
3 7
3 8
4 5
4 6
4 7
4 8
5 6
5 7
5 8
6 7
6 8
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 7

result:

ok correct

Test #50:

score: 0
Accepted
time: 1ms
memory: 3676kb

input:

50

output:

18 39
1 2
1 3
1 4
1 5
1 6
1 7
1 8
2 3
2 4
2 5
2 6
2 7
2 8
3 4
3 5
3 6
3 7
3 8
4 5
4 6
4 7
4 8
5 6
5 7
5 8
6 7
6 8
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 7

result:

ok correct

Test #51:

score: 0
Accepted
time: 2ms
memory: 3644kb

input:

51

output:

19 40
1 2
1 3
1 4
1 5
1 6
1 7
1 8
2 3
2 4
2 5
2 6
2 7
2 8
3 4
3 5
3 6
3 7
3 8
4 5
4 6
4 7
4 8
5 6
5 7
5 8
6 7
6 8
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 7

result:

ok correct

Test #52:

score: 0
Accepted
time: 2ms
memory: 3500kb

input:

52

output:

20 41
1 2
1 3
1 4
1 5
1 6
1 7
1 8
2 3
2 4
2 5
2 6
2 7
2 8
3 4
3 5
3 6
3 7
3 8
4 5
4 6
4 7
4 8
5 6
5 7
5 8
6 7
6 8
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 7

result:

ok correct

Test #53:

score: 0
Accepted
time: 2ms
memory: 3572kb

input:

53

output:

12 40
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 3
2 4
2 5
2 6
2 7
2 8
2 9
3 4
3 5
3 6
3 7
3 8
3 9
4 5
4 6
4 7
4 8
4 9
5 6
5 7
5 8
5 9
6 7
6 8
6 9
7 8
7 9
8 9
9 10
10 11
11 12
12 8

result:

ok correct

Test #54:

score: 0
Accepted
time: 2ms
memory: 3504kb

input:

54

output:

13 41
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 3
2 4
2 5
2 6
2 7
2 8
2 9
3 4
3 5
3 6
3 7
3 8
3 9
4 5
4 6
4 7
4 8
4 9
5 6
5 7
5 8
5 9
6 7
6 8
6 9
7 8
7 9
8 9
9 10
10 11
11 12
12 13
13 8

result:

ok correct

Test #55:

score: 0
Accepted
time: 1ms
memory: 3648kb

input:

55

output:

14 42
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 3
2 4
2 5
2 6
2 7
2 8
2 9
3 4
3 5
3 6
3 7
3 8
3 9
4 5
4 6
4 7
4 8
4 9
5 6
5 7
5 8
5 9
6 7
6 8
6 9
7 8
7 9
8 9
9 10
10 11
11 12
12 13
13 14
14 8

result:

ok correct

Test #56:

score: 0
Accepted
time: 2ms
memory: 3576kb

input:

56

output:

15 43
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 3
2 4
2 5
2 6
2 7
2 8
2 9
3 4
3 5
3 6
3 7
3 8
3 9
4 5
4 6
4 7
4 8
4 9
5 6
5 7
5 8
5 9
6 7
6 8
6 9
7 8
7 9
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 8

result:

ok correct

Test #57:

score: 0
Accepted
time: 2ms
memory: 3716kb

input:

57

output:

16 44
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 3
2 4
2 5
2 6
2 7
2 8
2 9
3 4
3 5
3 6
3 7
3 8
3 9
4 5
4 6
4 7
4 8
4 9
5 6
5 7
5 8
5 9
6 7
6 8
6 9
7 8
7 9
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 8

result:

ok correct

Test #58:

score: 0
Accepted
time: 2ms
memory: 3592kb

input:

58

output:

17 45
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 3
2 4
2 5
2 6
2 7
2 8
2 9
3 4
3 5
3 6
3 7
3 8
3 9
4 5
4 6
4 7
4 8
4 9
5 6
5 7
5 8
5 9
6 7
6 8
6 9
7 8
7 9
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 8

result:

ok correct

Test #59:

score: 0
Accepted
time: 2ms
memory: 3564kb

input:

59

output:

18 46
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 3
2 4
2 5
2 6
2 7
2 8
2 9
3 4
3 5
3 6
3 7
3 8
3 9
4 5
4 6
4 7
4 8
4 9
5 6
5 7
5 8
5 9
6 7
6 8
6 9
7 8
7 9
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 8

result:

ok correct

Test #60:

score: 0
Accepted
time: 2ms
memory: 3620kb

input:

60

output:

19 47
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 3
2 4
2 5
2 6
2 7
2 8
2 9
3 4
3 5
3 6
3 7
3 8
3 9
4 5
4 6
4 7
4 8
4 9
5 6
5 7
5 8
5 9
6 7
6 8
6 9
7 8
7 9
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 8

result:

ok correct
English 繁體中文 简体中文

Server Time: 2024-11-30 00:47:14 | OpenSource Project