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Cod sursa(job #625530)
#include <fstream.h>
int n,k,sol[19];
ifstream f("combinari.in");
ofstream g("combinari.out");
void citire()
{
f>>n>>k;
}
int ok(int c)
{
int i;
for (i=1;i<c;i++)
if(sol[c]==sol[i])
return 0;
/* for (i=1;i<c;i++)
if (sol[i]>sol[i+1])
return 0;*/
return 1;
}
void afisare()
{
int i;
for (i=1;i<=k;i++)
g<<sol[i]<<" ";
g<<"\n";
}
void comb(int c)
{
int i;
sol[0]=0;
for (i=sol[c-1]+1;i<=n;i++)
{
sol[c]=i;
if (ok(c))
if (c==k)
afisare();
else
comb(c+1);
}
}
int main()
{
citire();
comb(1);
return 0;
}