Решение
Возможные расходы:
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![`and`(S[A] = `+`(`*`(`+`(`*`(4, `*`(`*`(600, `/`(1, 100))))), 16.5), 3500), `+`(`*`(`+`(`*`(4, `*`(`*`(600, `/`(1, 100))))), 16.5), 3500) = 3896)](images/e_2.gif){kind=small}
![`and`(S[] = `+`(`*`(`+`(`*`(8, `*`(`*`(600, `/`(1, 100))))), 18), 3100), `+`(`*`(`+`(`*`(8, `*`(`*`(600, `/`(1, 100))))), 18), 3100) = 3964)](images/e_3.gif){kind=small}
![`and`(S[] = `+`(`*`(`+`(`*`(11, `*`(`*`(600, `/`(1, 100))))), 15), 3000), `+`(`*`(`+`(`*`(11, `*`(`*`(600, `/`(1, 100))))), 15), 3000) = 3990)](images/e_4.gif){kind=small}
