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  1. #include <bits/stdc++.h>
  2. #define ll long long
  3.  
  4. using namespace std;
  5.  
  6. const int MOD = 1e9 + 7;
  7.  
  8. void solve(){
  9. 	ll n, k;
  10. 	cin >> n >> k;
  11.  
  12. 	if(k == 1){
  13. 		cout << (n % MOD)<< "\n";
  14. 		return;
  15. 	}
  16. 	ll p = k - 1, q = k - 1;
  17.  
  18. 	ll cnt = 2;
  19. 	while(q != 0){
  20. 		ll next = (p + q);
  21. 		next %= k;
  22. 		p = q;
  23. 		q = next;
  24. 		cnt++;
  25. 		cnt %= MOD;
  26. 	}
  27. 	n %= MOD;
  28. 	cnt %= MOD;
  29. 	n *= cnt;
  30. 	n %= MOD;
  31. 	cout << n << "\n";
  32.  
  33. }
  34.  
  35. int main(){
  36. 	ios_base::sync_with_stdio(false);
  37. 	cin.tie(nullptr);
  38.  
  39. 	int t = 1;
  40. 	cin >> t;
  41.  
  42. 	for(int i = 1; i <= t; i++){
  43. 		solve();
  44. 	}
  45. 	return 0;
  46. }
Success #stdin #stdout 0s 5284KB
comments (?)
stdin
copy 
3
3 2
100 1
1000000000000 1377
stdout
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9
100
999244007
https://ideone.com/X0ukO3
language:
C++14 (gcc 8.3)
created:
3 days ago
visibility:
public

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