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#include <bits/stdc++.h>
#define NM 30
using namespace std;
ifstream f("submultimi.in");
ofstream g("submultimi.out");
int n,t,st[NM];
void Write()
{ for(int i=1; i<=t; i++) g<<st[i]<<' ';
g<<'\n';
}
void BKT(int top)
{ if(top==t+1) Write();
else
for(int i=st[top-1]+1; i<=n-t+top; i++)
{ st[top]=i;
BKT(top+1);
}
}
int main()
{ f>>n;
for(t=1; t<=n; t++) BKT(1);
return 0;
}