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Apr 25th, 2018
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  1. #include <bits/stdc++.h>
  2.  
  3. using namespace std;
  4.  
  5. int n,m,x;
  6.  
  7. int main()
  8. {
  9. cin>>n>>m;
  10. int t[n][m];
  11. string ch;
  12. set<int> s;
  13. for(int i=0;i<n;i++)
  14. {
  15. cin>>ch;
  16. for(int j=0;i<m;j++)
  17. t[i][j]=ch[j]-'0';
  18. }
  19. for(int j=0;j<m;j++)
  20. {
  21. int maxi=-1, pos=0;
  22. for(int i=0;i<n;i++)
  23. if(t[i][j]>maxi)
  24. {
  25. pos=i;
  26. maxi=t[i][j];
  27. }
  28. s.insert(pos);
  29. for(int i=0;i<n;i++)
  30. if(t[i][j]==maxi)
  31. s.insert(i);
  32. }
  33. cout<<s.size()<<endl;
  34. return 0;
  35. }
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