```cpp
#include<bits/stdc++.h>
using namespace std;
int main()
{
long t,n,i;
char x[1000],z[1000];
cin>>n>>x>>z;
for (i=0;i<n;i++)
{
if (x[i]>z[i])
{
cout<<"-1"<<endl;
return 0;
}
}
cout<<z<<endl;
return 0;
}
```
出题人是不会让你简单过的
by zr太弱了 @ 2019-10-02 21:48:26
@[zr太弱了](/space/show?uid=143661) ?大佬解释一下,我也是闲得慌把字典序换掉才对的...
by SadLava @ 2019-10-02 21:53:08
等等
by SadLava @ 2019-10-02 21:53:24
@[zr太弱了](/space/show?uid=143661) 懂了大佬,出题人给的字符串长度大于n...
by SadLava @ 2019-10-02 21:53:49
@[SadLava](/space/show?uid=167478) 窝是蒟蒻啊啊啊
by zr太弱了 @ 2019-10-02 21:54:23
我的代码有些防抄袭处理,交题解时改的
by zr太弱了 @ 2019-10-02 21:54:59