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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#658424#9488. Do Not Turn Backucup-team3510#AC ✓1437ms7164kbC++141.4kb2024-10-19 16:48:082024-10-19 16:48:15

Judging History

你现在查看的是最新测评结果

  • [2024-10-19 16:48:15]
  • 评测
  • 测评结果:AC
  • 用时:1437ms
  • 内存:7164kb
  • [2024-10-19 16:48:08]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
const int p=998244353;
struct matrix
{
	int a[311][311],r,c;
	matrix(){memset(a,0,sizeof(a));r=c=0;}
	matrix(int _r,int _c){r=_r;c=_c;memset(a,0,sizeof(a));}
};
matrix operator*(matrix a,matrix b)
{
	matrix c(a.r,b.c);
	for(int i=0;i<a.r;++i)
	{
		for(int j=0;j<b.c;++j)
		{
			__int128 tt=0;
			for(int k=0;k<a.c;++k)
			{
				tt+=1ll*a.a[i][k]*b.a[k][j];
			}
			c.a[i][j]=tt%p;
		}
	}
	return c;
}
matrix qpow(matrix bs,int ex)
{
	matrix ans(bs.r,bs.c);
	for(int i=0;i<bs.r;++i)ans.a[i][i]=1;
	while(ex)
	{
		if(ex&1)ans=ans*bs;
		bs=bs*bs;ex>>=1;
	}
	return ans;
}
int n,m,k;
vector<int> G[311];
int main()
{
	scanf("%d%d%d",&n,&m,&k);
	for(int i=1;i<=m;++i)
	{
		int u,v;scanf("%d%d",&u,&v);
		G[u].push_back(v);G[v].push_back(u);
	}
	matrix E(3*n+1,3*n+1);
	for(int i=1;i<=n;++i)
	{
		for(int v:G[i])
		{
			E.a[i][v]=1;
		}
	}
	for(int i=1;i<=n;++i)
	{
		E.a[i][i+n]=-1;
		E.a[i+n][i+2*n]=E.a[i+2*n][i+n]=-1;
		E.a[i+n][i]=(int)G[i].size();
		for(int v:G[i])E.a[i+2*n][v]=1;
	}
	// printf("E:\n");
	// for(int i=1;i<=2*n;++i)
	// {
	// 	for(int j=1;j<=2*n;++j)printf("%d ",E.a[i][j]);putchar(10);
	// }
	E=qpow(E,k);
	// printf("E:\n");
	// for(int i=1;i<=2*n;++i)
	// {
	// 	for(int j=1;j<=2*n;++j)printf("%d ",E.a[i][j]);putchar(10);
	// }
	printf("%d\n",(E.a[1][n]%p+p)%p);
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 2ms
memory: 7104kb

input:

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

output:

2

result:

ok "2"

Test #2:

score: 0
Accepted
time: 4ms
memory: 6824kb

input:

11 11 2023
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
1 11

output:

1

result:

ok "1"

Test #3:

score: 0
Accepted
time: 0ms
memory: 6840kb

input:

7 21 1000000000
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

output:

405422475

result:

ok "405422475"

Test #4:

score: 0
Accepted
time: 2ms
memory: 6832kb

input:

12 56 78144853
1 2
1 3
1 4
1 6
1 7
1 9
1 10
1 11
1 12
2 4
2 5
2 6
2 8
2 9
2 10
2 11
2 12
3 4
3 5
3 6
3 7
3 8
3 9
3 11
3 12
4 5
4 6
4 7
4 8
4 9
4 10
4 11
4 12
5 6
5 7
5 8
5 9
5 10
5 11
5 12
6 8
6 9
6 10
7 8
7 9
7 11
7 12
8 9
8 10
8 11
8 12
9 10
9 11
9 12
10 11
11 12

output:

843326021

result:

ok "843326021"

Test #5:

score: 0
Accepted
time: 8ms
memory: 6776kb

input:

13 61 268435455
1 2
1 3
1 4
1 5
1 6
1 8
1 9
1 10
1 11
1 12
1 13
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 12
2 13
3 4
3 5
3 6
3 7
3 8
3 9
3 10
4 6
4 7
4 9
4 12
4 13
5 6
5 7
5 9
5 11
5 13
6 7
6 8
6 9
6 11
6 12
6 13
7 8
7 10
7 11
7 12
8 9
8 10
8 11
8 12
8 13
9 10
9 12
9 13
10 11
10 12
10 13
11 12
11 13
12 13

output:

69651169

result:

ok "69651169"

Test #6:

score: 0
Accepted
time: 5ms
memory: 6828kb

input:

14 79 33554431
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
2 3
2 4
2 5
2 6
2 7
2 8
2 11
2 12
2 14
3 5
3 6
3 7
3 8
3 9
3 10
3 11
3 12
3 13
3 14
4 5
4 6
4 7
4 8
4 9
4 11
4 12
5 6
5 7
5 10
5 11
5 12
5 13
5 14
6 7
6 8
6 9
6 10
6 11
6 12
6 13
6 14
7 8
7 9
7 10
7 11
7 12
7 13
7 14
8 10
8 11
8...

output:

793621538

result:

ok "793621538"

Test #7:

score: 0
Accepted
time: 4ms
memory: 6832kb

input:

15 92 439487671
1 2
1 3
1 5
1 7
1 8
1 9
1 10
1 11
1 13
1 14
1 15
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
2 11
2 12
2 13
2 14
2 15
3 4
3 5
3 6
3 7
3 8
3 9
3 10
3 11
3 12
3 13
3 14
3 15
4 5
4 6
4 7
4 8
4 9
4 10
4 11
4 12
4 13
4 14
4 15
5 7
5 8
5 10
5 11
5 12
5 13
5 14
6 7
6 8
6 9
6 10
6 11
6 12
6 13
6 14
6 1...

output:

196201187

result:

ok "196201187"

Test #8:

score: 0
Accepted
time: 0ms
memory: 6888kb

input:

5 10 230391930
1 2
1 3
1 4
1 5
2 3
2 4
2 5
3 4
3 5
4 5

output:

552614127

result:

ok "552614127"

Test #9:

score: 0
Accepted
time: 5ms
memory: 6888kb

input:

5 8 268435455
1 2
1 3
1 4
2 3
2 4
2 5
3 4
4 5

output:

666456772

result:

ok "666456772"

Test #10:

score: 0
Accepted
time: 2ms
memory: 6828kb

input:

6 13 67108863
1 2
1 3
1 4
1 5
2 4
2 5
2 6
3 4
3 5
3 6
4 5
4 6
5 6

output:

317571510

result:

ok "317571510"

Test #11:

score: 0
Accepted
time: 5ms
memory: 6860kb

input:

7 18 67108863
1 2
1 3
1 4
1 5
1 6
1 7
2 3
2 4
2 5
2 6
2 7
3 5
3 6
4 5
4 6
4 7
5 6
6 7

output:

921436359

result:

ok "921436359"

Test #12:

score: 0
Accepted
time: 5ms
memory: 6840kb

input:

11 43 115349891
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
2 3
2 6
2 7
2 8
2 9
2 11
3 4
3 5
3 8
3 9
3 10
4 5
4 6
4 7
4 8
4 9
4 11
5 6
5 7
5 9
5 10
5 11
6 7
6 9
6 10
6 11
7 8
7 9
7 10
7 11
8 9
8 11
9 10
9 11

output:

853336717

result:

ok "853336717"

Test #13:

score: 0
Accepted
time: 7ms
memory: 6828kb

input:

14 78 758166229
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
2 3
2 4
2 5
2 6
2 7
2 8
2 10
2 11
2 14
3 5
3 6
3 7
3 8
3 9
3 10
3 11
4 5
4 6
4 7
4 8
4 9
4 10
4 11
4 13
4 14
5 6
5 7
5 8
5 9
5 10
5 11
5 13
5 14
6 7
6 8
6 9
6 10
6 11
6 12
6 14
7 8
7 9
7 10
7 11
7 12
7 13
7 14
8 9
8 10
8 11
8 1...

output:

949739691

result:

ok "949739691"

Test #14:

score: 0
Accepted
time: 142ms
memory: 6776kb

input:

52 51 376665160
1 2
1 3
2 4
4 5
5 6
5 7
3 8
5 9
5 10
5 11
6 12
4 13
2 14
6 15
14 16
9 17
8 18
15 19
11 20
9 21
1 22
21 23
3 24
24 25
24 26
10 27
7 28
24 29
16 30
6 31
4 32
5 33
10 34
33 35
32 36
19 37
29 38
18 39
17 40
13 41
39 42
3 43
12 44
34 45
20 46
38 47
27 48
43 49
5 50
6 51
4 52

output:

0

result:

ok "0"

Test #15:

score: 0
Accepted
time: 0ms
memory: 6828kb

input:

29 28 4
1 2
1 3
2 4
1 5
3 6
3 7
6 8
4 9
3 10
6 11
10 12
4 13
3 14
9 15
6 16
14 17
16 18
11 19
19 20
8 21
6 22
18 23
18 24
3 25
2 26
8 27
1 28
8 29

output:

1

result:

ok "1"

Test #16:

score: 0
Accepted
time: 1203ms
memory: 6836kb

input:

99 98 33554431
46 94
29 46
29 75
50 75
50 61
6 61
6 10
10 49
38 49
38 86
37 86
37 66
31 66
31 71
41 71
41 67
22 67
22 52
52 62
62 74
74 89
53 89
53 91
69 91
40 69
40 97
45 97
9 45
9 18
18 23
23 25
25 43
43 92
3 92
3 5
5 28
28 58
19 58
17 19
17 80
4 80
4 56
24 56
21 24
1 21
1 95
51 95
36 51
36 96
20 ...

output:

0

result:

ok "0"

Test #17:

score: 0
Accepted
time: 72ms
memory: 7112kb

input:

98 97 2
1 2
2 3
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 61
...

output:

1

result:

ok "1"

Test #18:

score: 0
Accepted
time: 735ms
memory: 6860kb

input:

91 91 68838384
35 46
29 46
29 75
50 75
50 61
6 61
6 10
10 49
38 49
38 86
37 86
37 66
31 66
31 71
41 71
41 67
22 67
22 52
52 62
62 74
74 89
53 89
53 91
69 91
40 69
40 79
45 79
9 45
9 18
18 23
23 25
25 43
12 43
3 12
3 5
5 28
28 58
19 58
17 19
17 80
4 80
4 56
24 56
21 24
1 21
1 64
51 64
36 51
36 47
20 ...

output:

1

result:

ok "1"

Test #19:

score: 0
Accepted
time: 897ms
memory: 7076kb

input:

92 92 860263916
30 45
45 60
60 66
66 78
15 78
9 15
9 14
14 35
35 37
37 85
24 85
24 65
64 65
10 64
10 53
32 53
22 32
22 51
51 80
80 92
77 92
43 77
33 43
33 39
39 82
6 82
2 6
2 88
40 88
40 58
25 58
25 72
72 91
7 91
7 8
8 57
48 57
21 48
21 68
68 79
55 79
12 55
12 38
1 38
1 90
63 90
13 63
13 44
44 54
47...

output:

1

result:

ok "1"

Test #20:

score: 0
Accepted
time: 827ms
memory: 7164kb

input:

91 4095 412854823
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
...

output:

309435713

result:

ok "309435713"

Test #21:

score: 0
Accepted
time: 1020ms
memory: 6944kb

input:

92 4186 67108863
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...

output:

445773689

result:

ok "445773689"

Test #22:

score: 0
Accepted
time: 1164ms
memory: 6916kb

input:

93 4278 536870911
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
...

output:

664971360

result:

ok "664971360"

Test #23:

score: 0
Accepted
time: 1009ms
memory: 6888kb

input:

94 4371 531304381
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
...

output:

33852961

result:

ok "33852961"

Test #24:

score: 0
Accepted
time: 5ms
memory: 7108kb

input:

10 38 187055368
1 2
1 3
1 5
1 6
1 8
1 9
1 10
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
3 4
3 5
3 6
3 7
3 8
3 9
3 10
4 5
4 6
4 7
4 8
4 9
5 7
5 8
5 9
5 10
6 7
6 8
6 9
6 10
7 8
7 10
8 10

output:

174346166

result:

ok "174346166"

Test #25:

score: 0
Accepted
time: 31ms
memory: 6848kb

input:

31 395 508956048
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
1 12
1 14
1 15
1 16
1 17
1 18
1 19
1 20
1 21
1 23
1 24
1 25
1 26
1 27
1 28
1 30
1 31
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
2 11
2 12
2 13
2 14
2 16
2 17
2 18
2 19
2 20
2 22
2 23
2 24
2 25
2 26
2 27
2 28
2 29
2 30
2 31
3 4
3 5
3 7
3 8
3 9
3 10
3 11
3 1...

output:

898454226

result:

ok "898454226"

Test #26:

score: 0
Accepted
time: 85ms
memory: 6848kb

input:

46 843 103688348
1 2
1 3
1 4
1 5
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 33
1 34
1 35
1 36
1 37
1 38
1 41
1 42
1 43
1 44
1 45
2 3
2 4
2 5
2 6
2 7
2 9
2 10
2 11
2 12
2 13
2 14
2 15
2 16
2 18
2 19
2 20
2 22
2 23
2 26
2...

output:

804037438

result:

ok "804037438"

Test #27:

score: 0
Accepted
time: 754ms
memory: 7124kb

input:

81 2612 536870911
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 21
1 22
1 24
1 25
1 26
1 27
1 28
1 29
1 30
1 31
1 32
1 33
1 34
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 49
1 50
1 51
1 52
1 53
1 55
1 56
1 57
1 58
1 59
1 60
1 61
1 63
1 64
1 65
...

output:

439960927

result:

ok "439960927"

Test #28:

score: 0
Accepted
time: 1255ms
memory: 6896kb

input:

98 3845 134217727
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
1 11
1 13
1 15
1 16
1 17
1 18
1 20
1 21
1 22
1 23
1 24
1 26
1 27
1 30
1 32
1 33
1 34
1 35
1 38
1 40
1 41
1 42
1 44
1 45
1 46
1 48
1 49
1 50
1 51
1 52
1 53
1 56
1 57
1 58
1 59
1 60
1 61
1 62
1 63
1 64
1 65
1 66
1 67
1 68
1 69
1 71
1 72
1 74
1 75
...

output:

687576024

result:

ok "687576024"

Test #29:

score: 0
Accepted
time: 64ms
memory: 7116kb

input:

38 559 33554431
1 2
1 3
1 6
1 7
1 8
1 9
1 10
1 11
1 12
1 14
1 15
1 16
1 18
1 20
1 21
1 23
1 25
1 26
1 27
1 28
1 29
1 30
1 31
1 32
1 33
1 34
1 35
1 38
2 4
2 5
2 6
2 8
2 9
2 10
2 11
2 12
2 13
2 14
2 15
2 16
2 18
2 19
2 20
2 21
2 22
2 24
2 25
2 26
2 28
2 29
2 30
2 31
2 32
2 34
3 4
3 5
3 6
3 7
3 8
3 9
3...

output:

245031029

result:

ok "245031029"

Test #30:

score: 0
Accepted
time: 194ms
memory: 6912kb

input:

53 1106 268435455
1 2
1 3
1 4
1 5
1 6
1 8
1 9
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2 14
...

output:

437352844

result:

ok "437352844"

Test #31:

score: 0
Accepted
time: 82ms
memory: 7128kb

input:

43 725 710015779
1 2
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2 20
2 21
2 23
2 24
2 26
2 27
2 29
2 32
2 3...

output:

287707534

result:

ok "287707534"

Test #32:

score: 0
Accepted
time: 337ms
memory: 6864kb

input:

66 1737 67108863
1 2
1 3
1 5
1 6
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1 63
1 64
1 66
2 4
2 5
2 6
2 7
2 8
2 9
2 10
2 11
2...

output:

655903832

result:

ok "655903832"

Test #33:

score: 0
Accepted
time: 27ms
memory: 6832kb

input:

29 327 815825607
1 2
1 3
1 4
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2 29
3 4
3 6
3 7
3 9
3 10
3 11
3 12
3 13
3 15
3 16
3 17
3 18
3 20
...

output:

3611745

result:

ok "3611745"

Test #34:

score: 0
Accepted
time: 1425ms
memory: 6884kb

input:

100 4950 536870911
1 2
1 3
1 4
1 5
1 6
1 7
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1 51
1 52
1 53
1 54
1 55
1 56
1 57
1 58
1 59...

output:

77654284

result:

ok "77654284"

Test #35:

score: 0
Accepted
time: 1437ms
memory: 6900kb

input:

100 3962 536870911
1 2
1 3
1 4
1 5
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1 7
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1 10
1 12
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1 53
1 54
1 55
1 56
1 57
1 58
1 60
1 61
1 62
1 63
1 64
1 65
1 67...

output:

277610741

result:

ok "277610741"

Test #36:

score: 0
Accepted
time: 1398ms
memory: 6908kb

input:

99 3919 536870911
1 2
1 3
1 4
1 5
1 7
1 9
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1 13
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1 56
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1 58
1 59
1 60
1 62
1 63
1 64
1 65
1 66
1 67
1 68
1 70
1 7...

output:

377999899

result:

ok "377999899"

Extra Test:

score: 0
Extra Test Passed