换成这样输入就AC了
```cpp
void read(){
std::string c;
while(std::cin >> c){
bool flag = 0;
for(auto i : c){
if(i != 'E') s += i;
else{
flag = 1;
break;
}
}
if(flag) break;
}
}
```
我猜是换号符的问题
by SF_bee @ 2024-02-06 22:37:55