poj 1146 ID Codes

#include<iostream>
#include<algorithm>
#include<string>
using namespace std;
int main()
{
    string line;
    while(cin>>line&&line!="#")
    {
        if(next_permutation(line.begin(),line.end()))
            cout<<line<<endl;
        else 
            cout<<"No Successor\n";
    }
return 0;
}