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  1. #include <stdio.h>
  2.  
  3. int factorial(int n){
  4. 	int i,result=1;
  5.  
  6. 	for(i=n;0<i;i--){
  7. 		result*=i;}
  8. 		return result;
  9. }
  10.  
  11. int comb(int m,int k){
  12. 	int result;
  13.  
  14. 	result=factorial(m)/(factorial(k)*factorial(m-k));
  15. 	return result;
  16. }
  17.  
  18. int main(void) {
  19. 	int m,k;
  20.  
  21. 	scanf("%d",&m);
  22. 	scanf("%d",&k);
  23. 	printf("%d",comb(m,k));
  24. 	return 0;
  25. }
  26.  
Success #stdin #stdout 0.01s 5280KB
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https://ideone.com/n6p3Zv
language:
C (gcc 8.3)
created:
89 days ago
visibility:
public

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