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  1. #include <iostream>
  2. #include <cstdio>
  3. #define ll long long
  4. using namespace std;
  5. int main()
  6. {
  7. 	int t;
  8. 	scanf("%d",&t);
  9. 	while(t!=0)
  10. 	   {
  11. 		  long long res=0,sum,j,k,res1;
  12. 		  long long m,n;
  13. 		  scanf("%lld %lld",&n,&m);
  14. 		   sum = (m-1)*(m)/2;
  15. 		   if(n%m==0)
  16. 		   {
  17. 		   j=n/m;
  18. 		   res=sum*j;
  19. 		   }
  20.  
  21. 		   else
  22. 		   {
  23. 		   j=n%m;
  24. 		   k=n/m;
  25. 		   res1 = j*(j+1)/2;
  26. 		   res = sum*k +res1;
  27. 		   }
  28. }}
Time limit exceeded #stdin #stdout 5s 3096KB
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https://ideone.com/GJ7QUv
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
public

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