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- #include <fstream>
- #define N 101
- using namespace std;
- int x[N], a[N][N],n,m;
- ifstream fin("gengraf.in");
- ofstream fout("gengraf.out");
- void Afisare(int k)
- {
- int i,j,ct=1;
- for(i=1;i<n;i++)
- for(j=i+1;j<=n;j++)
- a[i][j]=a[j][i]=x[ct++];
- fout<<"\n";
- for(i=1;i<=n;i++)
- {
- for(j=1;j<=n;j++)
- fout<<a[i][j]<<' ';
- fout<<"\n";
- }
- }
- void Back(int k)
- {
- for(int i=0;i<=1;i++)
- {
- x[k]=i;
- if(k==m)Afisare(k);
- else Back(k+1);
- }
- }
- int putere2(int n)
- {
- int p=1;
- for(int i=1;i<=n;i++)p*=2;
- return p;
- }
- int main()
- {
- fin>>n;
- m=(n-1)*n/2;
- fout<<putere2(m);
- Back(1);
- return 0;
- }
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