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#include<bits/stdc++.h>
#define N 1000
using namespace std;
bool b[N];
int a[N], n, d=0;
ifstream f("submultimi.in");
ofstream g("submultimi.out");
void back(int l, int st){
int i;
for(i=1;i<=n;i++) if(b[i]) {
g<<i<<' ';
d=1;
}
if(d)g<<endl;
for(i=st;i<=n;i++)if(!b[i]){
b[i]=1;
back(l+1,i+1);
b[i]=0;
}
}
int main(){
int i;
f>>n;
back(1, 1);
return 0;
}