driver Function
n = 642 NEW_LINE print ( n , end = " ▁ : ▁ " ) NEW_LINE if ( isSandwitched ( n ) ) : NEW_LINE INDENT print ( " Yes " ) NEW_LINE DEDENT else : NEW_LINE INDENT print ( " No " ) NEW_LINE DEDENT n = 9 NEW_LINE print ( n , end = " ▁ : ▁ " ) NEW_LINE if ( isSandwitched ( n ) ) : NEW_LINE INDENT print ( " Yes " ) NEW_LINE DEDENT else : NEW_LINE INDENT print ( " No " ) NEW_LINE DEDENT