Answer Posted / pankaj upadhyay

using c++;
#include<iostream>
#include<cmath>
using namespace std;
int main()
{
int a,b,c;
double d;
cout<<"enter no.";
cin>>a>>b;
d=pow(2,a-b)
c=(int)d;
if(c==0)
cout<<b;
else
cout<<a;
return 0;
}

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