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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define double long double
  4. signed main(){
  5. 	int n, k;
  6. 	cin >> n >> k;
  7. 	vector<int> a(n);
  8. 	for(int i = 0; i < n; i++){
  9. 		cin >> a[i];
  10. 	}
  11. 	double l = 1, r = 1e7;
  12. 	double ans = 0;
  13. 	for(int i = 0; i < 60; i++){
  14. 		double mid = (l + r) * 0.5;
  15. 		int now = 0; 
  16. 		for(int j = 0; j < a.size(); j++){
  17. 			now += a[j] / mid; 
  18. 		}
  19. 		cout << now << endl; 
  20. 		if(now == k){
  21. 			l = mid;
  22. 			ans = max(ans, mid);
  23. 		}
  24. 		if(now > k){
  25. 			l = mid;
  26. 		}else{
  27. 			r = mid;
  28. 		}
  29.  
  30. 	}
  31. 	cout << fixed << setprecision(15) << ans;
  32. }
Success #stdin #stdout 0s 5292KB
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191.734844207763672
https://ideone.com/Gn5zYq
language:
C++14 (gcc 8.3)
created:
4 days ago
visibility:
public

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