Answer Posted / vaibhav nigam

/*
your answer is quite correct but its better to use
r=-r; instead of r=abs(r);

well i would have done it like :

*/

#include <iostream>
using namespace std;
int main()
{
int k;
cin >> k;
k=(k<<4)-(k<<2)-(k<<1)-k;
cout << k << endl;
return 0;
}

//here no loop is used..

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