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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 |
|---|---|---|---|---|---|---|---|---|---|
| #563570 | #8795. Mysterious Sequence | donghanwen1225 | WA | 0ms | 3992kb | C++20 | 530b | 2024-09-14 13:55:04 | 2024-09-14 13:55:04 |
Judging History
answer
#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
double a,b;int n,x1,xn;
cin>>a>>b;cin>>n>>x1>>xn;
double l=-10000,r=10000;
while(r-l>1e-12)
{
double mid=(l+r)/2;
double c1=x1,c2=mid;
for(int i=3;i<=n;i++)
{
double nc=c1*a+c2*b;
c1=c2;c2=nc;
}
if(c2<xn) l=mid;
else r=mid;
}
printf("%d\n%.12lf\n",x1,r);
double c1=x1,c2=r;
for(int i=3;i<n;i++)
{
double nc=c1*a+c2*b;
c1=c2;c2=nc;printf("%.12lf\n",nc);
}
if(n>=3) printf("%d\n",xn);
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3980kb
input:
1.0 1.0 10 1 10
output:
1 -0.323529411764 0.676470588236 0.352941176471 1.029411764707 1.382352941179 2.411764705886 3.794117647064 6.205882352950 10
result:
ok 10 numbers
Test #2:
score: 0
Accepted
time: 0ms
memory: 3992kb
input:
1 1 2 1 100
output:
1 100.000000000000
result:
ok 2 numbers
Test #3:
score: 0
Accepted
time: 0ms
memory: 3860kb
input:
1 1 5 50 100
output:
50 0.000000000000 50.000000000000 50.000000000000 100
result:
ok 5 numbers
Test #4:
score: 0
Accepted
time: 0ms
memory: 3784kb
input:
0.25 0.25 10 1 1
output:
1 55.875536480687 14.218884120172 17.523605150215 7.935622317597 6.364806866953 3.575107296137 2.484978540773 1.515021459227 1
result:
ok 10 numbers
Test #5:
score: -100
Wrong Answer
time: 0ms
memory: 3972kb
input:
0.25 0.63 6 93 12
output:
93 -2.196895156100 21.865956051657 13.226328523519 13.799075982731 12
result:
wrong answer 2nd numbers differ - expected: '-14.2048080', found: '-2.1968952', error = '0.8453414'