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#include <stdio.h>
#define MAXN 18
FILE *fin, *fout;
int n, k;
char v[MAXN];
void bkt(int pos){
if(pos==k+1){
for(int i=1;i<=k;i++){
if(v[i]<10){
fputc(v[i]%10+'0', fout);
}
else{
fputc(v[i]/10+'0', fout);
fputc(v[i]%10+'0', fout);
}
fputc(' ', fout);
}
fputc('\n', fout);
}
else{
for(int i=v[pos-1]+1;i<=n;i++){
v[pos]=i;
bkt(pos+1);
}
}
}
int main()
{
fin=fopen("combinari.in", "r");
fscanf(fin, "%d%d", &n, &k);
fclose(fin);
fout=fopen("combinari.out", "w");
bkt(1);
fclose(fout);
return 0;
}