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Cod sursa(job #393156)
#include<fstream.h>
#include<iostream.h>
int main()
{
int v[20],n,k=1,i,ok;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
fin>>n;
k=1;
v[k]=0;
while(k>0)if(v[k]<n)
{
v[k]++;
ok=1;
for(i=1;i<k;i++)if(v[i]>=v[k]){
ok=0;
break;
}
if(k<=n && ok)
{
for(i=1;i<=k;i++)fout<<v[i]<<' ';
fout<<endl;
k++;
v[k]=0;
}
}
else k--;
return 0;
}