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Cod sursa(job #613755)
#include<cstdio>
int n,sol[20];
void afisare(int p)
{
if(p==0) return;
for(int i=1;i<=p;i++)
printf("%d ",sol[i]);
printf("\n");
}
void bkt(int p)
{
if(p>n+1)
{
return;
}
afisare(p-1);
for(int i=sol[p-1]+1;i<=n;i++)
{
sol[p]=i;
bkt(p+1);
}
}
int main()
{
freopen("submultimi.in","r",stdin);
freopen("submultimi.out","w",stdout);
scanf("%d",&n);
bkt(1);
return 0;
}