样例3的输入是:26
qwertyuiopasdfghjklzxcvbnm
输出是qwertyuiopasdfghjklzxcvbnm
我本地结果与样例结果一致,但是就一直报RE
#include<bits/stdc++.h>
using namespace std;
int main(){
string s,ans;
int n,len;
cin>>n;
cin>>s;
len=s.length();
for(int i=0;i<len;i++){
ans[i]=char((s[i]-'a'+n)%26+'a');
cout<<ans[i];
}
return 0;
}