Cod sursa(job #158295)
Utilizator | Radu Gabriel mike4problems | Data | 13 martie 2008 16:19:01 |
---|---|---|---|
Problema | Combinari | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.37 kb |
#include<fstream>
using namespace std;
int n,x;
int used[20],perm[20];
ifstream f("combinari.in");
ofstream g("combinari.out");
void back(int k)
{
int i;
if(k>x)
{
for(i=1;i<=n;i++)
g<<perm[i]<<' ';
g<<'\n';
return;
}
for(i=perm[k-1]+1;i<=n;i++)
if(!used[i])
{
perm[k]=i;
used[i]=1;
back(k+1);
used[i]=0;
}
}
int main()
{
f>>n>>x;
back(1);
}