循环应该从0开始
```cpp
#include <iostream>
#include <string>
using namespace std;
int main(int argc, char** argv)
{
string a,b;
cin>>a>>b;
int l1,l2;
l1=a.size();
l2=b.size();
int c=1,d=1;
for(int i=**_0_**;i<=l1;i++)
c=c*(a[i]-64);
for(int i=**_0_**;i<=l2;i++)
d=d*(b[i]-64);
c=c%47;
d=d%47;
if(c==d)
cout<<"GO";
else
cout<<"STAY";
return 0;
}
```
by YHS_123 @ 2017-02-09 22:23:24