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Cod sursa(job #411122)
#include<stdio.h>
FILE *f,*g;
char a[1001][1001];
int viz[1001],m,n,kk,i,ok,x[1001],nr;
int cont(int k)
{
if(k>1 &&a[x[k]][x[k-1]]==1)
return 0;
return 1;
}
void tipar()
{
int i;
for(i=1;i<=n;i++)
fprintf(g,"%d ",x[i]);
}
void back(int k)
{
int i;
if(ok==1) return;
for(i=1;i<=n;i++)
if(viz[i]==0)
{
x[k]=i;
if(cont(k))
{ viz[i]=1;
if(k==n){
nr++;
if(nr==kk){
tipar();
ok=1;}
}
else
back(k+1);
}
viz[i]=0;
}
if(ok==1) return;
}
int main()
{
int x1,x2;
f=fopen("dusman.in","r");
g=fopen("dusman.out","w");
fscanf(f,"%d %d %d",&n,&kk,&m);
for(i=1;i<=m;i++)
{
fscanf(f,"%d %d",&x1,&x2);
a[x1][x2]=1;
a[x2][x1]=1;
}
back(1);
return 0;
}