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Nov 25th, 2018
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  1. #include <iostream>
  2.  
  3. using namespace std;
  4. int n,a[101][101],i,j;
  5. bool sw;
  6. int main()
  7. {
  8. cin>>n;
  9. for(i=1;i<=n;i++)
  10. {
  11. for(j=1;j<=n;j++)
  12. {
  13. cin>>a[i][j];
  14. }
  15. }
  16. sw=1;
  17. for(i=1;i<=n && sw==1;i++)
  18. {
  19. for(j=1;j<=i && sw==1;j++)
  20. {
  21. if( a[i][j]!=a[j][i] || a[i][i]==1 || a[i][j]>1 || a[i][j]<0)
  22. {
  23. sw=0;
  24. }
  25.  
  26. }
  27. }
  28. cout<<sw;
  29. return 0;
  30. }
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