fork download
copy 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define int              long long int
  4. #define double           long double
  5. #define print(a)         for(auto x : a) cout << x << " "; cout << endl
  6. inline int power(int a, int b) {
  7.     int x = 1;
  8.     while (b) {
  9.         if (b & 1) x *= a;
  10.         a *= a;
  11.         b >>= 1;
  12.     }
  13.     return x;
  14. }
  15.  
  16.  
  17. const int M = 1000000007;
  18. const int N = 3e5+9;
  19. const int INF = 2e9+1;
  20. const int LINF = 2000000000000000001;
  21.  
  22. //_ ***************************** START Below *******************************
  23.  
  24. int count(int n, int mid){
  25.  
  26. 	int ct = 0;
  27. 	for(int i=1; i<=n; i++){
  28. 		ct += min( mid/i , n );
  29. 	}
  30. 	return ct;
  31.  
  32. }
  33.  
  34.  
  35.  
  36. int consistency1(int n){
  37.     if(n==1) return 1;
  38.     int s = 1, e = n*n;
  39.     int ans = LINF;
  40.     while(s<=e){
  41.         int mid = s + (e-s)/2;
  42.         if(count(n, mid) >= (n*n+1)/2 ){
  43.             ans = min(ans, mid);
  44.             e = mid-1;
  45.         }
  46.         else s = mid+1;
  47.     }
  48.  
  49.     return ans;
  50.  
  51. }
  52.  
  53.  
  54. int consistency2(int n){
  55.     int s = 1;
  56.     int e = n*n;
  57.     int total = n*n;
  58.  
  59.     while(s<e){
  60.     	int mid = s + (e-s)/2;
  61.     	if(count(n, mid) >= (total+1)/2){
  62.     		e = mid;
  63.     	}
  64.     	else s = mid+1;
  65.     }
  66.  
  67.     return e;
  68.  
  69. }
  70.  
  71. void solve() {
  72.  
  73.     int n;
  74.     cin>>n;
  75.  
  76.     cout << consistency1(n) << " " << consistency2(n) << endl;
  77.  
  78.  
  79. }
  80.  
  81.  
  82.  
  83.  
  84.  
  85. int32_t main() {
  86.     ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  87.  
  88.     int t = 1;
  89.     cin >> t;
  90.     while (t--) {
  91.         solve();
  92.     }
  93.  
  94.     return 0;
  95. }
Success #stdin #stdout 1.48s 5316KB
comments (?)
stdin
copy 
5
3
5
2
999997
999999
stdout
copy 
3 3
8 8
2 2
186681673010 186681673010
186682420008 186682420008
https://ideone.com/db7A3N
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!