## $if$语句打错了$!!!$
```cpp
#include <iostream>
using namespace std;
int main()
{
int s,x,sta=0;double j=0.0000;
cin>>s>>x;
for(double i=1.0000;;i*=0.98)
{
if(j>=s-x&&j<=s+x) sta=1;
if(x==0){cout<<"n"<<endl; return 0;}
j+=7*i;
if(sta&&j<=s+x) {cout<<"y"<<endl;return 0;}
if(j>s+x){cout<<"n"<<endl; return 0;}
}
}
```
by OItby @ 2019-01-27 13:44:11
@[AC黑洞](/space/show?uid=141448) 感谢帮助
by UFP50103 @ 2019-01-28 07:43:26