Limak little polar bear he do not toy play polynomialshe consider polynomial valid degree n coefficient integer exceed k absolute value More formallylet a0a1an denote coefficient then polynomial Px valid follow condition satisfied ai integer aik an0 Limak recently get valid polynomial p coefficient a0a1a2an he notice P20 want change he go change coefficient valid polynomial Q degree n Q20 Count number way you count way distinct coefficient target polynom differ