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#176223#5377. $N$ 门问题Fy5Fengye35 1ms4120kbC++201.0kb2023-09-11 12:48:192023-09-11 12:48:19

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你现在查看的是最新测评结果

  • [2023-09-11 12:48:19]
  • 评测
  • 测评结果：35
  • 用时：1ms
  • 内存：4120kb
查看
  • [2023-09-11 12:48:19]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
#define int __int128
int m,n;
int a[1003],b[1003];
double ans[12]={1.000000,1.000000,0.500000,0.666667,0.625000,0.466667,0.416667,0.342857,0.291667,0.253968,0.225000,0};
inline int read()
{
    int ret=0; char c=getchar();
    while(!isdigit(c)) c=getchar();
    while(isdigit(c)) ret=ret*10+c-'0',c=getchar();
    return ret;
}
inline int exGCD(int a,int b,int&x,int&y)
{
    if(!b) {x=1,y=0; return a;}
    int d=exGCD(b,a%b,y,x);
    y-=(a/b*x); return d;
}
inline int exCRT()
{
    for(int i=1;i<=m;++i) b[i]%=a[i];
    int M=a[1],ret=b[1];
    for(int i=2;i<=m;++i)
    {
        int y,z,d=exGCD(M,a[i],y,z);
        if((b[i]-ret)%d!=0) return -1;
        y=(y*(b[i]-ret)/d)%(a[i]/d);
        ret+=y*M,M=M*a[i]/d;
        ret=(ret%M+M)%M;
    }
    return ret;
}
signed main()
{
    m=read(); for(int i=1;i<=m;++i) b[i]=read(),a[i]=read();
    n=exCRT(); if(n<2) {puts("error"); return 0;}
    if(n>10) {puts("0.000000"); return 0;} else printf("%.6lf\n",ans[n]);
    return 0;
}
源文件, 语言: C++20

详细

Subtask #1:

score: 5
Accepted

Test #1:

score: 5
Accepted
time: 0ms
memory: 3744kb

input:

1
2 3

output:

0.500000

result:

ok single line: '0.500000'

Test #2:

score: 0
Accepted
time: 0ms
memory: 3916kb

input:

1
3 5

output:

0.666667

result:

ok single line: '0.666667'

Test #3:

score: 0
Accepted
time: 0ms
memory: 3880kb

input:

1
4 5

output:

0.625000

result:

ok single line: '0.625000'

Test #4:

score: 0
Accepted
time: 0ms
memory: 3628kb

input:

1
0 4

output:

error

result:

ok single line: 'error'

Test #5:

score: 0
Accepted
time: 0ms
memory: 3628kb

input:

1
1 3

output:

error

result:

ok single line: 'error'

Subtask #2:

score: 10
Accepted

Test #6:

score: 10
Accepted
time: 0ms
memory: 3620kb

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: 3708kb

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: 3940kb

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: 3876kb

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: 3980kb

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: 3700kb

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: 3504kb

input:

2
1000000007 1000000008
2 4

output:

error

result:

ok single line: 'error'

Test #13:

score: 0
Accepted
time: 0ms
memory: 3860kb

input:

3
0 1001
0 241221531
0 2

output:

error

result:

ok single line: 'error'

Test #14:

score: 0
Accepted
time: 0ms
memory: 3912kb

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: 3632kb

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: 4008kb

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: 3700kb

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: 4112kb

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: 4040kb

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: 4120kb

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: 3676kb

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: 3880kb

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: 3536kb

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: 3564kb

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: 3620kb

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: 3560kb

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: 10
Accepted

Dependency #3:

100%
Accepted

Test #27:

score: 10
Accepted
time: 0ms
memory: 3552kb

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: 3876kb

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: 3608kb

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: 3932kb

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: 3760kb

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: 3756kb

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: 1ms
memory: 3756kb

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: 3876kb

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: 3880kb

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: 3976kb

input:

1
5 6

output:

0.466667

result:

ok single line: '0.466667'

Test #37:

score: 0
Accepted
time: 0ms
memory: 3876kb

input:

1
6 7

output:

0.416667

result:

ok single line: '0.416667'

Test #38:

score: 0
Accepted
time: 0ms
memory: 3872kb

input:

1
7 8

output:

0.342857

result:

ok single line: '0.342857'

Test #39:

score: 0
Accepted
time: 0ms
memory: 3960kb

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: 3756kb

input:

4
0 3
0 9
1 2
4 5

output:

0.253968

result:

ok single line: '0.253968'

Test #41:

score: 0
Accepted
time: 1ms
memory: 4008kb

input:

3
0 2
0 5
1 3

output:

0.225000

result:

ok single line: '0.225000'

Test #42:

score: 0
Accepted
time: 0ms
memory: 3784kb

input:

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

output:

error

result:

ok single line: 'error'

Test #43:

score: 0
Accepted
time: 0ms
memory: 3628kb

input:

6
837250 1574381
22682 54289
20 29
81 233
6139 6757
0 1

output:

error

result:

ok single line: 'error'

Test #44:

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

input:

6
12521 54289
1478324 1574381
20 29
171 233
0 1
5298 6757

output:

error

result:

ok single line: 'error'

Test #45:

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

input:

8
9430402 12649337
193 233
12831718919798818 37281334283719577
358403095623 686719856393
31260796633308 160005726539569
0 1
38405 54289
1780337582 2947295521

output:

error

result:

ok single line: 'error'

Test #46:

score: 0
Accepted
time: 0ms
memory: 3696kb

input:

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

output:

0.416667

result:

ok single line: '0.416667'

Subtask #5:

score: 0
Runtime Error

Dependency #1:

100%
Accepted

Dependency #4:

100%
Accepted

Test #47:

score: 0
Runtime Error

input:

27216
1100249873 1253754216
25197605440 29192187024
1744207706249 2277822821274
12223300097 26875346784
147492353 275539264
320696949581 377638144884
419900489 699380136
453032 1231659
266587329 890393504
7730812097 11914078176
524332817 661404744
2287601 8261694
1156980833 14524544034
967031297 145...

output:

result:

Subtask #6:

score: 0
Wrong Answer

Test #57:

score: 25
Accepted
time: 0ms
memory: 3564kb

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: 3564kb

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: 3616kb

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: 3632kb

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: 3592kb

input:

2
543380932 999999999
451172165 1000000000

output:

0.000000

result:

ok single line: '0.000000'

Test #62:

score: 0
Accepted
time: 0ms
memory: 3788kb

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
Wrong Answer
time: 0ms
memory: 3640kb

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:

error

result:

wrong answer 1st lines differ - expected: '0.000000', found: 'error'

Subtask #7:

score: 0
Skipped

Dependency #1:

100%
Accepted

Dependency #2:

100%
Accepted

Dependency #3:

100%
Accepted

Dependency #4:

100%
Accepted

Dependency #5:

0%
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