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Cod sursa(job #551796)
#include<fstream.h>
int d[4][1001],viz[1001],c,n,m,a,b,i,x[1001],nenea;
ifstream f ("dusman.in");
ofstream g ("dusman.out");
int ver(int i, int k){
if(x[k-1]==0)
return 1;
if(x[k-1]==d[1][i]||x[k-1]==d[2][i]||x[k-1]==d[3][i])
return 0;
return 1;
}
void back(int k){
if(k==n+1 ){
nenea++;
if(nenea==c){
for(int i=1;i<=n;i++)
g<<x[i]<<" ";
g<<"\n";
}
return;
}
for(int i=1;i<=n;i++){
if(!viz[i]&&ver(i,k)){
x[k]=i;
viz[i]=1;
back(k+1);
viz[i]=0;
if(c==nenea)
return;
}
}
}
int main (){
f>>n>>c>>m;
for(i=1;i<=m;i++){
f>>a>>b;
d[0][a]++;
d[0][b]++;
d[d[0][a]][a]=b;
d[d[0][b]][b]=a;
}
back(1);
return 0;
}