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  1. #include <iostream>
  2.  
  3. #define _size 200
  4.  
  5. using namespace std;
  6.  
  7.  
  8.  
  9. int main()
  10. {
  11. 	unsigned long long tab[_size][_size];
  12. 	tab[1][1] = 1;
  13. 	tab[2][1] = 2;
  14. 	tab[2][2] = 1;
  15. 	for(int i=3;i<_size-1;i++)
  16. 	{
  17. 		tab[i][1] = i;
  18. 		for(int j=2;j<_size-1;j++)
  19. 		{
  20. 			tab[i][j] = tab[i-1][j-1]+tab[i-1][j]; 
  21. 		}
  22. 	}
  23. 	int x,y;
  24. 	cin>>x>>y;
  25. 	cout<<tab[x][y];
  26. 	return 0;
  27. }
  28.  
Success #stdin #stdout 0s 3532KB
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stdin
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10 4
stdout
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210
https://ideone.com/HqEa6g
language:
C++ (gcc 8.3)
created:
9 years ago
visibility:
public

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