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Cod sursa(job #717381)
#include <fstream>
using namespace std;
int n, m, c[20];
ofstream g("combinari.out");
void Read()
{
ifstream f("combinari.in");
f>>n>>m;
f.close();
}
void back(int k)
{
if (k-1 == m)
{
int i;
for (i=1; i<=m; i++)
g<<c[i]<<" ";
g<<"\n";
}
else
{
int i;
for (i = c[k-1] + 1; i<=n-m+k; i++)
{
c[k] = i;
back(k+1);
}
}
}
void Solve()
{
back(1);
g.close();
}
int main()
{
Read();
Solve();
return 0;
}