case of n = 1 handled separately
if ( n == 1 ) : NEW_LINE INDENT print ( - 1 ) NEW_LINE DEDENT else : NEW_LINE INDENT b = ( n * n - 1 ) // 2 NEW_LINE c = ( n * n + 1 ) // 2 NEW_LINE print ( " b ▁ = " , b , " , ▁ c ▁ = " , c ) NEW_LINE DEDENT else : NEW_LINE