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#include <bits/stdc++.h>
#include <math.h>
#include <cmath>
double squareRoot(long long n, int d)
{
double res = sqrt((double)n);
int flr = floor(res);
res = res - flr;
res = res*pow((double)10 ,(double) d);
res = floor(res);
res = flr+ (res * pow((double)10 , (double)(-d)));
return res;
}