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- //
- #include<fstream>
- #include<iostream>
- using namespace std;
- int a[50][50], i, j, k, x[50], n, sol;
- void citire()
- {
- ifstream f("date.in");
- f>>n;
- for(i=1; i<=n; i++)
- for(j=1; j<=n; j++)
- f>>a[i][j];
- f.close();
- }
- int cont(int k)
- {
- int i;
- for(i=1; i<k; i++)
- if(x[i]==x[k])
- return 0;
- if(k>1)
- if(a[x[k]][x[k-1]]==0)
- return 0;
- if(k==n)
- if(a[x[n]][x[1]]==3)
- return 0;
- return 1;
- }
- void afis()
- {
- for(i=1; i<=n; i++)
- cout<<x[i]<<" ";
- cout<<x[1]<<'\n';
- }
- void back()
- {
- int k=1;
- x[k]=0;
- do
- {
- while(x[k]<n)
- {
- x[k]++;
- if(cont(k))
- if(k==n)
- {
- sol=1;
- afis();
- break;
- }
- else
- {
- k++;
- x[k]=0;
- }
- if(sol)
- break;
- }
- k--;
- }
- while(k);
- }
- int main()
- {
- citire();
- back();
- if(!sol)
- cout << "Nu avem niciun circuit hamiltonian.";
- return 0;
- }
- // Exemplu:
- /*
- 6
- 0 1 0 1 0 1
- 1 0 1 1 1 0
- 0 1 0 1 0 1
- 1 1 1 0 1 0
- 0 1 0 1 0 1
- 1 0 1 0 0 1
- */
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