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#include <cstdio>
using namespace std;
int n, sol[18];
void write(int k)
{
for(int i=1; i<=k; i++)
{
printf("%d ", sol[i]);
}
printf("\n");
}
void backtracking(int k)
{
for(int i=sol[k-1]+1; i<=n; i++)
{
sol[k]=i;
write(k);
backtracking(k+1);
}
}
int main()
{
freopen("submultimi.in", "r", stdin);
freopen("submultimi.out", "w", stdout);
scanf("%d ", &n);
backtracking(1);
return 0;
}