????????

???????棬?????????Σ????й??ж???????????黳?м?θ???

1???

Σ???????

?????濪???μ?????й?????й???л?????????????????????????????黳??й????壬??????????????淢????????漣??±?

?????????μ??????????????????λ?????????м?ι????��???????????????????????????????????????Щ??β??

?????????????й??????????????λ????????????·??ι???С???й??????????????????Сμ??￡??????????????????У?????ɡ?????л?С

2???

????????????й???з????塣

???????????????й????????й????????й????μ?λ???????й???岼??????μ??áΡΡ?????й3??????????塣

Χ????????????????磬?÷?д??Щν?ì?Ч????￡?γ?濪???????÷????????贴??????????????????Э????в?????ЧЭ???

??????????ε?·?顢顢鷢?仯??δе????????о??????粻?δ?????顢???顢г?顢????????иΣ?Σ??Σ?Σ??????Щ?????????????ε?????????????С????顢???

3?黳?

????????黳

?·???桰й????ì?????йδ?????Ρ????????·???й??й?·???????????????л???????й????й?·??????????Щ?????

??????????????й????н???а??￡?????????帴???й??????м???????á????????????й??????????飬??????帴????

??й???????????????????塢????????йδ????μ?й??????й???????硣й??ζй?·?????????й??Щ?????????????й??й????????Щ飬????顣

??????й????о