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#include <iostream>
#include <stdio.h>
#include <stdlib.h>
using namespace std;
int n,start;
int v[20];
void printarr(int level){
int i;
for( i=1;i<=level;i++){
printf("%d ",v[i]);
}
printf("\n");
}
void gen(int level){
int i;
for(i=v[level-1]+1 ; i<=n ; i++){
v[level]=i;
printarr(level);
gen(level+1);
}
}
int main(){
freopen("submultimi.in","r",stdin);
freopen("submultimi.out","w",stdout);
scanf("%d",&n);
gen(1);
return 0;
}