//FileName : 146.cpp

//Author   : Wang Bo




#include <iostream.h>

#include <string.h>



int main()

{

	char line[55];

	short i,j,len;



	while(1)

	{

		cin>>line;

		if(line[0]=='#')

			break;

		len=strlen(line);

		for(i=len-1;i && line[i-1]>=line[i];i--)

			;

		if(i==0)

		{

			cout<<"No Successor"<<endl;

			continue;

		}

		for(j=0;j<i-1;j++)

			cout<<line[j];

		cout<<line[len-1];

		for(j=i-1;j<len-1;j++)

			cout<<line[j];

		cout<<endl;

	}

	return 0;

}

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