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Cod sursa(job #801294)
//combinari
#include<fstream>
using namespace std;
ifstream f("combinari.in");
ofstream o("combinari.out");
int n,m,x[20],k;
void initialize()
{
x[k]=0;
}
int getnumber()
{
if(x[k]<n)
{
x[k]++;
return 1;
}
else
return 0;
}
int valid()
{
int l=1;
if(k>1)
if(!(x[k]>x[k-1]))
l=0;
return l;
}
int solutie()
{
if(k==m)
return 1;
else
return 0;
}
void scrie()
{
for(int i=1;i<=k;i++)
{o<<x[i]<<' ';
}
o<<'\n';
}
void back()
{
int a;
k=1;
initialize();
while(k>0)
{
do{}while((a=getnumber())&&!valid());
if(a)
if(solutie()) scrie();
else
{
k++;
initialize();
}
else
k--;
}
}
int main()
{
f>>n>>m;
back();
f.close();
o.close();
return 0;
}