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- #include <iostream>
- #include <fstream>
- using namespace std;
- ifstream fin("lant.in");
- ofstream fout("lant.out");
- int A[101][101], n, m, p, q, X[101], P[101];
- void afisare(int k)
- {
- for(int i=1;i<=k;i++)
- fout<<X[i]<< " " ;
- fout<<"\n";
- }
- void back(int k)
- {
- for(int i=1;i<=n;i++)
- if(!P[i])
- {
- X[k]=i;
- P[i]=1;
- if(A[X[k-1]][X[k]]==1) ///atentie la k==1 || ...
- if(X[k]==q) afisare(k);
- else back(k+1);
- P[i]=0;
- }
- }
- int main()
- {
- fin>>n>>m;
- for(int i=1;i<=m;i++)
- {
- int x, y;
- fin>>x>>y;
- A[x][y]=A[y][x]=1;
- }
- fin>>p>>q;
- X[1]=p;
- P[p]=1;
- back(2);
- return 0;
- }
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