希望更丰富的展现？使用Markdown
by nofall @ 2018-11-06 22:48:39
```
#include<bits/stdc++.h>
using namespace std;
int main(){
double swim=2,G=0,x;
cin>>x;
for(int i=1;;i++)
{
G=G+swim;
swim=swim*0.98;
if(G>=x){cout<<i;break;}
}
return 0;
}
```
by LinAPro @ 2018-11-06 22:56:17