X+X*9%=48
    X+X*9%=250
    X+X*9%=30
    X+X*9%=1160
    26700+A-A*10%/12*3≥50000
    X+X*9%=1720
    X+X*9%=760
    X+X*9%=238
    X+X*9%=715
    X+X*9%=215
    X+X*9%=584
    X+X*9%=80
    X+X*9%=45
    X+X*9%=190
    X+X*9%=540
    X+X*9%=450
    5000-x*50≥10*x^0.5
    -5x^2+4x+9<0
    π^n≥n^π
    π^n≤n^π

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