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#include <cstdio>
using namespace std;
int n, v[20];
void afisare(int l)
{
for(int i = 1; i <= l; ++i) printf("%d ", v[i]);
printf("\n");
}
void bkt(int k)
{
for(int i = v[k - 1] + 1; i <= n; ++i)
{
v[k] = i;
afisare(k);
bkt(k + 1);
}
}
int main()
{
freopen("submultimi.in", "r", stdin);
freopen("submultimi.out", "w", stdout);
scanf("%d", &n);
fclose(stdin);
bkt(1);
fclose(stdout);
return 0;
}