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Cod sursa(job #560348)
#include<fstream.h>
ifstream f("combinari.in");
ofstream g(" combinari.out");
int N,K,x[20];
void afis()
{
int i;
for(i=1;i<=K;++i) g<<x[i]<<" ";
g<<"\n";
}
void back (int k)
{
for (int i = 1; i <= N; i++)
{ x[k] = i;
if (x[k] > x[k - 1]) if (k == K) afis();
else back (k + 1);
}
}
int main()
{
f>>N>>K;
back(1);
return 0;
}