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  1. #include <stdio.h>
  2.  
  3. int comb(int n, int r){
  4. 	if(n==r || r==0)
  5. 	return 1;
  6. 	else
  7. 	return comb(n-1, r-1) + comb(n-1,r);
  8. }
  9.  
  10. int path(int x, int y){
  11. 	if(x==0 && y==0)
  12. 	return 0;
  13. 	else
  14. 	return comb(x+y,y);
  15. }
  16.  
  17. int main(void){
  18. 	int x,y;
  19. 	scanf("%d %d", &x,&y);
  20. 	printf("%d\n",path(x,y));
  21. return 0;
  22. }
Success #stdin #stdout 0.01s 5276KB
comments (?)
stdin 
3 4
stdout 
35
https://ideone.com/UFsxuh
language:
C (gcc 8.3)
created:
5 days ago
visibility:
public

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