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#176694#5377. $N$ 门问题Conviction25 0ms1768kbC++141.0kb2023-09-11 21:35:492023-09-11 21:35:49

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你现在查看的是最新测评结果

  • [2023-09-11 21:35:49]
  • 评测
  • 测评结果：25
  • 用时：0ms
  • 内存：1768kb
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  • [2023-09-11 21:35:49]
  • 提交

answer

#include<cstdio>
#include<algorithm>
#define gc getchar()
using namespace std;
const int mm=1100;
double val[20]={0,0,0.5,0.666667,0.625,0.466667,0.416667,0.342857,0.291667,0.253968,0.225};
__int128 a[mm],b[mm];
__int128 read()
{
	__int128 ans=0;char ch=gc;
	while(ch<'0' || ch>'9') ch=gc;
	while(ch>='0' && ch<='9') ans=(ans<<3)+(ans<<1)+(ch^48),ch=gc;
	return ans; 
}
void exgcd(__int128 a,__int128 b,__int128 &x,__int128 &y)
{
	if(b==0)
	{
		x=1,y=0;
		return ;
	}
	exgcd(b,a%b,x,y);
	__int128 res=x;
	x=y,y=res-a/b*y;
}
int main() {
	// freopen("door.in","r",stdin);
	// freopen("door.out","w",stdout);
	int m=read();
	for(int i=1;i<=m;i++) b[i]=read(),a[i]=read();
	__int128 M=a[1],ans=b[1];
	for(int i=2;i<=m;i++)
	{
		__int128 d=__gcd(M,a[i]),tmp=(b[i]-ans%a[i]+a[i])%a[i],x,y;
		if(tmp%d!=0) return puts("error"),0;
		exgcd(M,a[i],x,y);
		ans+=(tmp/d*x*M),M*=a[i]/d;
		ans=(ans%M+M)%M;
	}
	if(ans<2) return puts("error"),0;
	if(ans>10) return puts("0.000000"),0;
	int n=ans>9?9:ans;
	printf("%.6lf",val[n]);
	return 0;
}
源文件, 语言: C++14

详细

Subtask #1:

score: 5
Accepted

Test #1:

score: 5
Accepted
time: 0ms
memory: 1616kb

input:

1
2 3

output:

0.500000

result:

ok single line: '0.500000'

Test #2:

score: 0
Accepted
time: 0ms
memory: 1720kb

input:

1
3 5

output:

0.666667

result:

ok single line: '0.666667'

Test #3:

score: 0
Accepted
time: 0ms
memory: 1660kb

input:

1
4 5

output:

0.625000

result:

ok single line: '0.625000'

Test #4:

score: 0
Accepted
time: 0ms
memory: 1424kb

input:

1
0 4

output:

error

result:

ok single line: 'error'

Test #5:

score: 0
Accepted
time: 0ms
memory: 1404kb

input:

1
1 3

output:

error

result:

ok single line: 'error'

Subtask #2:

score: 10
Accepted

Test #6:

score: 10
Accepted
time: 0ms
memory: 1372kb

input:

8
1 160005726539569
1 233
0 1
1 2947295521
1 686719856393
1 54289
1 12649337
1 37281334283719577

output:

error

result:

ok single line: 'error'

Test #7:

score: 0
Accepted
time: 0ms
memory: 1760kb

input:

10
2 64
0 2
2 512
2 4
2 32
2 16
2 256
0 1
2 8
2 128

output:

0.500000

result:

ok single line: '0.500000'

Test #8:

score: 0
Accepted
time: 0ms
memory: 1652kb

input:

10
3 256
3 16
0 1
3 8
3 512
3 32
3 4
3 128
3 64
1 2

output:

0.666667

result:

ok single line: '0.666667'

Test #9:

score: 0
Accepted
time: 0ms
memory: 1620kb

input:

10
0 2
4 8
0 4
4 256
0 1
4 512
4 32
4 128
4 64
4 16

output:

0.625000

result:

ok single line: '0.625000'

Test #10:

score: 0
Accepted
time: 0ms
memory: 1744kb

input:

10
5 128
5 32
5 16
1 4
0 1
5 64
5 256
5 512
1 2
5 8

output:

0.466667

result:

ok single line: '0.466667'

Test #11:

score: 0
Accepted
time: 0ms
memory: 1744kb

input:

10
6 32
6 16
6 256
6 64
0 1
6 128
0 2
6 512
6 8
2 4

output:

0.416667

result:

ok single line: '0.416667'

Test #12:

score: 0
Accepted
time: 0ms
memory: 1420kb

input:

2
1000000007 1000000008
2 4

output:

error

result:

ok single line: 'error'

Test #13:

score: 0
Accepted
time: 0ms
memory: 1324kb

input:

3
0 1001
0 241221531
0 2

output:

error

result:

ok single line: 'error'

Test #14:

score: 0
Accepted
time: 0ms
memory: 1740kb

input:

3
6 1001
6 241221531
0 2

output:

0.416667

result:

ok single line: '0.416667'

Subtask #3:

score: 10
Accepted

Dependency #2:

100%
Accepted

Test #15:

score: 10
Accepted
time: 0ms
memory: 1356kb

input:

8
1 160005726539569
1 233
0 1
1 2947295521
1 686719856393
1 54289
1 12649337
1 37281334283719577

output:

error

result:

ok single line: 'error'

Test #16:

score: 0
Accepted
time: 0ms
memory: 1768kb

input:

10
2 64
0 2
2 512
2 4
2 32
2 16
2 256
0 1
2 8
2 128

output:

0.500000

result:

ok single line: '0.500000'

Test #17:

score: 0
Accepted
time: 0ms
memory: 1740kb

input:

10
3 256
3 16
0 1
3 8
3 512
3 32
3 4
3 128
3 64
1 2

output:

0.666667

result:

ok single line: '0.666667'

Test #18:

score: 0
Accepted
time: 0ms
memory: 1728kb

input:

10
0 2
4 8
0 4
4 256
0 1
4 512
4 32
4 128
4 64
4 16

output:

0.625000

result:

ok single line: '0.625000'

Test #19:

score: 0
Accepted
time: 0ms
memory: 1624kb

input:

10
5 128
5 32
5 16
1 4
0 1
5 64
5 256
5 512
1 2
5 8

output:

0.466667

result:

ok single line: '0.466667'

Test #20:

score: 0
Accepted
time: 0ms
memory: 1724kb

input:

10
6 32
6 16
6 256
6 64
0 1
6 128
0 2
6 512
6 8
2 4

output:

0.416667

result:

ok single line: '0.416667'

Test #21:

score: 0
Accepted
time: 0ms
memory: 1724kb

input:

10
7 16
7 8
3 4
0 1
7 32
7 256
7 64
1 2
7 512
7 128

output:

0.342857

result:

ok single line: '0.342857'

Test #22:

score: 0
Accepted
time: 0ms
memory: 1652kb

input:

10
8 16
8 64
8 32
0 1
0 8
0 2
8 128
0 4
8 256
8 512

output:

0.291667

result:

ok single line: '0.291667'

Test #23:

score: 0
Accepted
time: 0ms
memory: 1344kb

input:

10
1 2
113 128
0 8
1 16
49 64
17 32
241 256
1 4
241 512
0 1

output:

error

result:

ok single line: 'error'

Test #24:

score: 0
Accepted
time: 0ms
memory: 1368kb

input:

10
5 8
237 512
1 2
13 32
12 16
0 1
109 128
1 4
45 64
237 256

output:

error

result:

ok single line: 'error'

Test #25:

score: 0
Accepted
time: 0ms
memory: 1324kb

input:

10
11 16
43 64
235 512
11 32
3 4
0 1
235 256
0 2
107 128
3 8

output:

error

result:

ok single line: 'error'

Test #26:

score: 0
Accepted
time: 0ms
memory: 1396kb

input:

10
9 32
1 2
41 64
233 512
233 256
1 4
0 1
9 16
1 8
115 128

output:

error

result:

ok single line: 'error'

Subtask #4:

score: 0
Wrong Answer

Dependency #3:

100%
Accepted

Test #27:

score: 10
Accepted
time: 0ms
memory: 1428kb

input:

8
1 5
1 15
1 2
1 30
1 3
0 1
1 6
1 10

output:

error

result:

ok single line: 'error'

Test #28:

score: 0
Accepted
time: 0ms
memory: 1724kb

input:

8
2 30
2 15
0 1
2 6
2 5
2 3
2 10
0 2

output:

0.500000

result:

ok single line: '0.500000'

Test #29:

score: 0
Accepted
time: 0ms
memory: 1428kb

input:

8
0 1
0 3
0 15
0 2
0 30
0 6
0 5
0 10

output:

error

result:

ok single line: 'error'

Test #30:

score: 0
Accepted
time: 0ms
memory: 1656kb

input:

8
1 2
5 30
0 1
0 5
2 3
5 6
5 15
5 10

output:

0.466667

result:

ok single line: '0.466667'

Test #31:

score: 0
Accepted
time: 0ms
memory: 1652kb

input:

8
3 5
0 3
3 15
3 10
0 1
1 2
3 30
3 6

output:

0.666667

result:

ok single line: '0.666667'

Test #32:

score: 0
Accepted
time: 0ms
memory: 1664kb

input:

6
0 3
3 4
1 2
3 6
0 1
3 12

output:

0.666667

result:

ok single line: '0.666667'

Test #33:

score: 0
Accepted
time: 0ms
memory: 1752kb

input:

6
0 1
2 6
0 4
2 3
0 2
8 12

output:

0.291667

result:

ok single line: '0.291667'

Test #34:

score: 0
Accepted
time: 0ms
memory: 1764kb

input:

6
0 1
1 2
2 3
1 4
5 6
5 12

output:

0.466667

result:

ok single line: '0.466667'

Test #35:

score: 0
Accepted
time: 0ms
memory: 1632kb

input:

6
3 12
1 2
0 3
0 1
3 4
3 6

output:

0.666667

result:

ok single line: '0.666667'

Test #36:

score: 0
Accepted
time: 0ms
memory: 1760kb

input:

1
5 6

output:

0.466667

result:

ok single line: '0.466667'

Test #37:

score: 0
Accepted
time: 0ms
memory: 1724kb

input:

1
6 7

output:

0.416667

result:

ok single line: '0.416667'

Test #38:

score: 0
Accepted
time: 0ms
memory: 1632kb

input:

1
7 8

output:

0.342857

result:

ok single line: '0.342857'

Test #39:

score: 0
Accepted
time: 0ms
memory: 1724kb

input:

4
0 2
0 4
2 3
3 5

output:

0.291667

result:

ok single line: '0.291667'

Test #40:

score: 0
Accepted
time: 0ms
memory: 1732kb

input:

4
0 3
0 9
1 2
4 5

output:

0.253968

result:

ok single line: '0.253968'

Test #41:

score: -10
Wrong Answer
time: 0ms
memory: 1760kb

input:

3
0 2
0 5
1 3

output:

0.253968

result:

wrong answer 1st lines differ - expected: '0.225000', found: '0.253968'

Subtask #5:

score: 0
Skipped

Dependency #1:

100%
Accepted

Dependency #4:

0%

Subtask #6:

score: 0
Runtime Error

Test #57:

score: 25
Accepted
time: 0ms
memory: 1432kb

input:

15
15 17
2 3
5 31
4 5
12 29
38 41
3 11
44 47
16 23
11 19
6 13
3 37
1 2
21 43
5 7

output:

0.000000

result:

ok single line: '0.000000'

Test #58:

score: 0
Accepted
time: 0ms
memory: 1424kb

input:

14
10 16
21 37
0 23
0 5
11 17
1 3
17 29
19 31
33 43
6 13
4 7
16 41
9 19
0 11

output:

0.000000

result:

ok single line: '0.000000'

Test #59:

score: 0
Accepted
time: 0ms
memory: 1400kb

input:

14
7 23
2 16
2 19
9 11
2 5
7 13
2 7
25 41
25 31
3 9
7 43
3 37
8 17
9 29

output:

0.000000

result:

ok single line: '0.000000'

Test #60:

score: 0
Accepted
time: 0ms
memory: 1420kb

input:

14
2 13
14 19
38 43
10 17
3 8
21 29
0 9
4 7
2 5
1 37
2 11
5 23
22 31
10 41

output:

0.000000

result:

ok single line: '0.000000'

Test #61:

score: 0
Accepted
time: 0ms
memory: 1324kb

input:

2
543380932 999999999
451172165 1000000000

output:

0.000000

result:

ok single line: '0.000000'

Test #62:

score: 0
Accepted
time: 0ms
memory: 1424kb

input:

15
1 2
9 13
31 37
1 17
0 23
1 3
2 5
17 31
9 11
5 29
4 47
6 7
40 41
1 19
26 43

output:

0.000000

result:

ok single line: '0.000000'

Test #63:

score: -25
Runtime Error

input:

50000
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 ...

output:

result:

Subtask #7:

score: 0
Skipped

Dependency #1:

100%
Accepted

Dependency #2:

100%
Accepted

Dependency #3:

100%
Accepted

Dependency #4:

0%
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