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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, int mod=M) {
  14.     int x = 1;
  15.     a %= mod;
  16.     while (b) {
  17.         if (b & 1) x = (x * a) % mod; 
  18.         a = (a * a) % mod;
  19.         b >>= 1;
  20.     }
  21.     return x;
  22. }
  23.  
  24.  
  25. //_ ***************************** START Below *******************************
  26.  
  27.  
  28. vector<int> a;
  29.  
  30. int consistency(int n) {
  31.  
  32. 	map<int,int>mp;
  33. 	for(int i=0; i<n; i++) mp[a[i]]++;
  34.  
  35. 	int ans = 0;
  36. 	int sz = mp.size()-1;
  37. 	for(auto it = mp.rbegin(); it!=mp.rend(); ++it){
  38. 		ans += (it->second * sz);
  39. 		sz--;
  40. 	}
  41. 	return ans;
  42.  
  43. }
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  65.  
  66.  
  67. int practice(int n){
  68.  
  69.  
  70.     return 0;
  71. }
  72.  
  73.  
  74.  
  75.  
  76.  
  77. void solve() {
  78.  
  79.     int n;
  80.     cin >> n;
  81.     a.resize(n);
  82.     for(int i=0; i<n; i++) cin >> a[i];
  83.  
  84.     cout << consistency(n) << endl ;
  85.  
  86. }
  87.  
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  93.  
  94.  
  95. int32_t main() {
  96.     ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  97.  
  98.     int t = 1;
  99.     // cin >> t;
  100.     while (t--) {
  101.         solve();
  102.     }
  103.  
  104.     return 0;
  105. }
Success #stdin #stdout 0s 5312KB
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https://ideone.com/lFOspw
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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