3
f1(a,b)=524b+375+270a+665a+518b+911a*9a*333b*(755b-601b+59a+380b)
f2(a,b)=937a*81-237*849a*627a*223b*904a*930-340a-155b
f3(a)=562a+768a+365a+602a+407a*(123a*646a-a+936-a-885-(447a*214a))
f1(495,202)*f2(554,638)*f2(777,948)+f3(587)+f3(268)+f2(767,679)+f1(3,953)
