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Cod sursa(job #151472)
#include<fstream.h>
ifstream f("dusman.in");
ofstream g("dusman.out");
int i,n,m,nr,sol,k,x1,x2,a[1005][1005],x[1005],vec[1005];
int main()
{
f>>n>>nr>>m;
for(i=0;i<m;i++)
{
f>>x1>>x2;
a[x1][x2]=1;
a[x2][x1]=1;
}
k=1;
x[k]=0;
while(k>0)
{
if(x[k]<n)
{
x[k]++;
if(a[x[k]][x[k-1]]==0 && vec[x[k]]==0)
{
if(k==n)
{
sol++;
if(sol==nr)
{
for(i=1;i<=n;i++)
g<<x[i]<<' ';
break;
}
}
else
{
vec[x[k]]=1;
k++;
x[k]=0;
}
}
}
else
{
k--;
vec[x[k]]=0;
}
}
g.close();
return 0;
}