var n, i:longint; rez:int64; begin readln (n); rez:=3; for i:=2 to n do rez:=rez*2; writeln (rez); end.

Дядя Энштэйн, умножение на два заменяется на битовую операцию компилятором -_-

include <bits/stdc++.h>

using namespace std; long long ans = 1; int main(){ int a; cin>>a; long long eded = 3; for(int i = 2;i<=a;i++){ eded = eded*2; } cout<<eded; }

n = int(input ()) print (3*pow(2,n-1))

include<stdio.h>

include<math.h>

using namespace std; int main(){ long long n,a; scanf("%d", &n); a=3*pow(2,n-1); printf("%ld", a); }

include <bits/stdc++.h> using namespace std; long long ans = 1; int main(){ int a; cin>>a; long long eded = 3; for(int i = 2;i<=a;i++){ eded = eded*2; } cout<<eded; }

include <bits/stdc++.h>

using namespace std;

int main(){

int a;

cin>>a;

long long eded = 3; 

for(int i = 2;i<=a;i++){

    eded = eded*2;

    }

    cout<<eded;

    }

// it is not mean Sunday Monday Tuesday Wednesday Thursday friday Saturday

it is mean ---> Sunday Monday Tuesday ( W T F ???) Saturday

include <bits/stdc++.h>

using namespace std; int main (){ long long a,b,c,d; cin>>a; c=1; for(b=3;c<a;c++){ b*=2; } cout<<b; }

include <bits/stdc++.h>

using namespace std; int main () { int n; cin >> n; long long k = 3; for (int i = 2; i <= n; i++) { k = k * 2; } cout << k; }

include <bits/stdc++.h>

using namespace std; int main (){ long long a,b,c,d; cin>>a; c=1; for(b=3;c<a;c++){ b*=2; } cout<<b; }