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  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.  
  7.  
  8. const int M = 1000000007;
  9. const int N = 3e5+9;
  10. const int INF = 2e9+1;
  11. const int LINF = 2000000000000000001;
  12.  
  13. inline int power(int a, int b) {
  14.     int x = 1;
  15.     a %= M;
  16.     while (b) {
  17.         if (b & 1) x = (x * a) % M; 
  18.         a = (a * a) % M;
  19.         b >>= 1;
  20.     }
  21.     return x;
  22. }
  23.  
  24.  
  25. //_ ***************************** START Below *******************************
  26.  
  27.  
  28.  
  29.  
  30. vector<int> a;
  31. vector<int> b;
  32.  
  33. int consistency(int n){
  34.  
  35. 	sort(begin(a), end(a));
  36. 	sort(begin(a), end(a), greater<int>());
  37.  
  38.     int sum = 0;
  39.     for(int i=0; i<n; i++){
  40.     	sum += (a[i] * b[i]);
  41.     }
  42.  
  43.     return sum;    
  44. }
  45.  
  46.  
  47.  
  48.  
  49.  
  50.  
  51.  
  52. void solve() {
  53.  
  54.     int n;
  55.     cin>> n;
  56.  
  57.     a.resize(n);
  58.     b.resize(n);
  59.     for(int i=0; i<n; i++) cin >> a[i];
  60.     for(int i=0; i<n; i++) cin >> b[i];
  61.  
  62.     cout << consistency(n) << endl;
  63.  
  64.  
  65. }
  66.  
  67.  
  68.  
  69.  
  70.  
  71. int32_t main() {
  72.     ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  73.  
  74.     int t = 1;
  75.     // cin >> t;
  76.     while (t--) {
  77.         solve();
  78.     }
  79.  
  80.     return 0;
  81. }
Success #stdin #stdout 0.01s 5288KB
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https://ideone.com/YuIjfD
language:
C++14 (gcc 8.3)
created:
8 hours ago
visibility:
public

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