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class Solution {
public:
    double myPow(double x, int n) {
        return pow(x,n);
    }
};

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class Solution {
    public double myPow(double x, int n) {
        double cnt=x;
        boolean nrev=true;
        if (n<0){
           nrev=false;
            n*=-1;
        }
        else if (n==0)
            return 1.00000;
        else if (x==1)
            return 1.00000;
        for (int i=1; i<n; i++)
                cnt=cnt*x;
        if (nrev)
            return cnt;
        else
            return 1/cnt;
        
    }
}