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Cod sursa(job #153650)
#include<fstream.h>
int n,m,i,a[20],sol[20];
ofstream g("combinari.out");
void afis()
{
int i;
for(i=1;i<=m;i++)
g<<a[sol[i]]<<" ";
g<<"\n";
}
void back(int k)
{
int i;
if(k>m)
afis();
else
{
for(i=sol[k-1]+1;i<=n;i++)
{
sol[k]=i;
back(k+1);
}
}
}
int main()
{
ifstream f("combinari.in");
ofstream g("combinari.out");
f>>n>>m;
for(i=1;i<=n;i++)
a[i]=i;
back(1);
return 0;
}