你确定是WA而不是TLE吗
by zhangjiahao @ 2023-02-18 11:04:24
有没有一种可能是数组越界了
```
if(s[i]=='G'){
a[i]=a[i-1]+(-1);
}else{
a[i]=a[i-1]+1;
}
```
当i=0时a[i-1]……
by zhangjiahao @ 2023-02-18 11:10:41
@[whitrice](/user/537546) hey
by zhangjiahao @ 2023-02-18 11:14:26
@[zhangjiahao](/user/416716) 不是TLE
by whitrice @ 2023-02-18 11:54:48
@[zhangjiahao](/user/416716) 不是数组越界，我改了以后还是四十分
代码：
```cpp
#include<bits/stdc++.h>
using namespace std;
long long a[1000005],ans;
int main(){
string s;
cin>>s;
int l=s.size();
for(int i=0;i<l;i++){
if(s[i]=='G'){
if(i==0){
a[i]+=-1;
}
a[i]=a[i-1]+(-1);
}else{
if(i==0){
a[i]+=1;
}
a[i]=a[i-1]+1;
}
}
for(long long i=0;i<l;i++){
for(long long j=i+1;j<l;j++){
if(a[j]-a[i]==0){
ans=max(ans,abs(i-j));
}
}
}
cout<<ans;
return 0;
}
by whitrice @ 2023-02-18 14:41:07