cho a,b,c là các số thực thỏa mãn điều kiện a>1,b>0,c>0 và bất phương trình $a^{x^{2}}$ $(b+4c)^{2x+3}$ $\geq$ 1 có tập nghiệm là R biết rằng biểu thức P=16a/3+1/b+1/c đạt giá trị nhỏ nhất tại a=m,b=n,c=p . Khi đó tổng m+n+p bằng

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