```c
#include<bits/stdc++.h>
double x;
int main(){
std::cin>>x;
std::cout<<ceil(log(1-x/100)/log(0.98));
return 0;
}
```
这是我的AC代码，你康一下。
by sunkewei1 @ 2023-06-17 14:45:54
@[Stare](/user/838728) cin的变量，你没用到？
by juruo_zxt @ 2023-06-17 14:48:15
@[sunkewei1](/user/964438)
谢谢大佬
by Traveller_Blanca @ 2023-06-17 14:48:18
```
#include <iostream>
using namespace std;
int main()
{
double s;
cin>>s;
double i=2;
int j=1;
double ikun=2;
s-=2;
while(ikun>s)
{
ikun+=i;
i*=0.98;
j++;
}
cout <<j;
return 0;
}
```
by Traveller_Blanca @ 2023-06-17 14:48:56
@[PHzxt](/user/780175) 改了
by Traveller_Blanca @ 2023-06-17 14:49:16
没事 提醒一下
by juruo_zxt @ 2023-06-17 14:49:56
@[PHzxt](/user/780175) 但问题在哪
by Traveller_Blanca @ 2023-06-17 14:50:26
@[Stare](/user/838728)
把`ikun>2`改成`ikun<s`即可
求关
by zhouzihe @ 2023-06-17 15:15:11
@[zhouzihe](/user/798537) 对，后来我会了，本贴结束
（你也关我吧）
by Traveller_Blanca @ 2023-06-17 20:50:47