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  1. #include <stdio.h>
  2. #include <math.h>
  3. #define ll long long
  4.  
  5. int solve(int n, ll k){
  6. 	int sum = 0;
  7. 	for(int i = 1; i <= n; i ++){
  8. 		sum += i % k;
  9. 	}
  10. 	return sum;
  11. }
  12.  
  13. int main(){
  14. 	int t;
  15. 	scanf("%d", &t);
  16. 	while(t--){
  17. 		int n;
  18. 		long long k;
  19. 		scanf("%d%lld", &n, &k);
  20. 		printf("%d\n", solve(n, k));
  21. 	}
  22. }
Success #stdin #stdout 0.01s 5412KB
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stdin
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2
10 55
1 11
stdout
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55
1
https://ideone.com/GxCilP
Minh - Tính 1 % k + 2 % k ............ n % k
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
public

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