QOJ.ac

QOJ

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
#176216#5377. $N$ 门问题NATURAL65 1ms3512kbC++141.3kb2023-09-11 12:41:252023-09-11 12:41:27

Judging History

你现在查看的是最新测评结果

  • [2023-09-11 12:41:27]
  • 评测
  • 测评结果：5
  • 用时：1ms
  • 内存：3512kb
查看
  • [2023-09-11 12:41:25]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
inline long long qread()
{
	long long a=0,f=1;char ch=getchar();
	while(!isdigit(ch)){if(ch=='-')f=-1;ch=getchar();}
	while(isdigit(ch)){(a*=10)+=(ch^48);ch=getchar();}
	return a*f;
}
int m;
long long aa[1010],bb[1010],ans=-1;
inline long long exgcd(long long a,long long b,long long &x,long long &y)
{
    if(!b)return x=1,y=0,a;
    long long an=exgcd(b,a%b,x,y),t=x;
    x=y;y=t-a/b*y;
    return an;
}
inline long long excrt()
{
    long long x,y,M=bb[1],ans=aa[1],A,B,C,t,BB;
    for(int i=2;i<=m;++i)
    {
        A=M;B=bb[i];C=((aa[i]-ans)%bb[i]+bb[i])%bb[i];
        t=exgcd(A,B,x,y);BB=B/t;
        x=(__int128)x*C/t%BB;
        ans+=x*M;
        M*=BB;
        ans%=M;
        ans+=M;
        ans%=M;
    }
    return ans;
}
int main()
{
//	freopen("door.in","r",stdin);
//	freopen("door.out","w",stdout);
	m=qread();
	for(int i=1;i<=m;++i)aa[i]=qread(),bb[i]=qread();
	ans=excrt();
	if(ans<2)puts("error");
	else if(ans<=10)
	{
		if(ans==2)puts("0.500000");
		else if(ans==3)puts("0.666667");
		else if(ans==4)puts("0.625000");
		else if(ans==5)puts("0.466667");
		else if(ans==6)puts("0.416667");
		else if(ans==7)puts("0.342857");
		else if(ans==8)puts("0.291667");
		else if(ans==9)puts("0.253968");
		else puts("0.225000");
	}
	else puts("0.000000");
	return 0;
}
源文件, 语言: C++14

详细

Subtask #1:

score: 5
Accepted

Test #1:

score: 5
Accepted
time: 0ms
memory: 3456kb

input:

1
2 3

output:

0.500000

result:

ok single line: '0.500000'

Test #2:

score: 0
Accepted
time: 1ms
memory: 3420kb

input:

1
3 5

output:

0.666667

result:

ok single line: '0.666667'

Test #3:

score: 0
Accepted
time: 1ms
memory: 3428kb

input:

1
4 5

output:

0.625000

result:

ok single line: '0.625000'

Test #4:

score: 0
Accepted
time: 0ms
memory: 3436kb

input:

1
0 4

output:

error

result:

ok single line: 'error'

Test #5:

score: 0
Accepted
time: 1ms
memory: 3432kb

input:

1
1 3

output:

error

result:

ok single line: 'error'

Subtask #2:

score: 0
Wrong Answer

Test #6:

score: 10
Accepted
time: 0ms
memory: 3460kb

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: 1ms
memory: 3368kb

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: 3416kb

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: 3448kb

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: 3440kb

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: 1ms
memory: 3416kb

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: -10
Wrong Answer
time: 0ms
memory: 3408kb

input:

2
1000000007 1000000008
2 4

output:

0.000000

result:

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

Subtask #3:

score: 0
Skipped

Dependency #2:

0%

Subtask #4:

score: 0
Skipped

Dependency #3:

0%

Subtask #5:

score: 0
Skipped

Dependency #1:

100%
Accepted

Dependency #4:

0%

Subtask #6:

score: 0
Wrong Answer

Test #57:

score: 25
Accepted
time: 0ms
memory: 3456kb

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: 3512kb

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: 3424kb

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: 3464kb

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: 3412kb

input:

2
543380932 999999999
451172165 1000000000

output:

0.000000

result:

ok single line: '0.000000'

Test #62:

score: 0
Accepted
time: 0ms
memory: 3424kb

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: 3368kb

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:

0%
English 繁體中文 简体中文

服务器时间: 2024-12-02 18:06:20 | 开源项目