#include<bits/stdc++.h>

using namespace std;

#define wt while(true)

vector<int>subset;

int n=7;

void search_(int first = 0, subset)

{

if(k == n+1)

{

for(auto x: subset)

cout<<x;

}

else

{

subset.push_back(k);

search_(k+1);

}

}

int main()

{

freopen("input.txt", "r", stdin);

freopen("op.txt", "w", stdout);

ios::sync_with_stdio(0);

cin.tie(0);

cin>>n;

for(int i=0; i<n; i++)

{

int a;

cin>>a;

arr[i]=a;

}

while(n--)

search_(n);

for(auto x: subset)

cout<<x<<" ";

return 0;

}