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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 |
|---|---|---|---|---|---|---|---|---|---|
| #563566 | #8795. Mysterious Sequence | donghanwen1225 | Compile Error | / | / | C++20 | 372b | 2024-09-14 13:53:25 | 2024-09-14 13:53:25 |
Judging History
answer
#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
double a,b;int x1,xn;
cin>>a>>b;cin>>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("%.12lf",r);
return 0;
}
详细
answer.code: In function ‘int main()’:
answer.code:13:32: error: ‘n’ was not declared in this scope
13 | for(int i=3;i<=n;i++)
| ^