class Main
{
	public static void main( String[] args )
	{
		java.util.Scanner sc = new java.util.Scanner( System.in );
		
		String str = sc.next();
		
		for( int index = str.length()-1 ; index >= 0 ; index-- )
			System.out.print( str.charAt( index ) );
		System.out.println();
	}
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz