(100Y+30Y+15Y+12Y+10Y+8Y+7Y+6Y+5.5Y+5Y+4.5Y+4Y+3.5Y+3Y)/1000*10>100*0.1
    (100Y+30Y+15Y+12Y+10Y+8Y+7Y+6Y+5.5Y+5Y+4.5Y+4Y+3.5Y+3Y)/1000*25>100*1.5
    (100Y+30Y+15Y+12Y+10Y+8Y+7Y)/1000*25>100*1.5
    (100Y+30Y+15Y+12Y+10Y+8Y+7Y)/1000*20>100*0.6
    4/a＞0
    4a＞0
    -x^2+110x-2400≤525
    （150-150a%)×80+（180-180a%)×100≥222000
    -0.5-1>0
    x-2（x-3）＞4
    x（1-x）> 3/16
    (x-1)/(x-5)<=0
    (x-1)/(x-5)<0
    (1/2)^x>x^2
    2^n+1-2＞2022-n^2
    (49.9-50x-8)/49.9＜(169-200x-8)/169
    (49.9-50x-8)/49.9＞(169-200x-8)/169
    (49.9-50x-8)/49.9＞（196-200x-8）/169
    m∧2－4+m＜0
    m∧2－6+m＜0

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