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#include<stdio.h>
using namespace std;
int st[100],n;
void print(int p){
for(int i=1;i<=p;++i)
printf("%d ",st[i]);
printf("\n");
}
bool ok(int p){
}
void bktr(int p){
for(int i=st[p-1]+1;i<=n;++i){
st[p]=i;
print(p);
bktr(p+1);
}
}
int main(){
freopen("submultimi.in","r",stdin);
freopen("submultimi.out","w",stdout);
scanf("%d",&n);
bktr(1);
return 0;
}