1651A Playoff codeforces solution in cpp

 

1651A Playoff codeforces solution in cpp

by ujjal roy

#include<bits/stdc++.h>

using namespace std;

#define ll long long int

int main()

{

    ll t,i,n;

    cin>>t;

    while(t--)

    {

        cin>>n;

        i=pow(2,n);

        cout<<i-1<<endl;

    }

    return 0;

}