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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. void executeTime() {
  5.     cerr << "Time Taken: " << (float)clock() / CLOCKS_PER_SEC << " secs";
  6. }
  7.  
  8. int main() {
  9.  
  10.     int n; cin >> n;
  11.  
  12.     vector<int> v(n);
  13.     for (auto &x : v) {
  14.         cin >> x;
  15.     }
  16.  
  17.     map<int, int> mp;
  18.  
  19.     for (auto &x : v) {
  20.         mp[x] ++;
  21.     }
  22.  
  23.     int ans = 0;
  24.  
  25.     int ls = 0;
  26.     for (auto it = mp.rbegin(); it != mp.rend(); it++) {
  27.  
  28.         it->second += ls;
  29.         ls = it->second;
  30.  
  31.         ans += it->second;
  32.     }
  33.  
  34.     ans -= mp.begin() -> second;
  35.  
  36.     cout << ans << endl;
  37.  
  38.     executeTime();
  39.     return 0;
  40. }
Success #stdin #stdout #stderr 0s 5320KB
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stderr
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Time Taken: 0.004096 secs
https://ideone.com/XnfzLQ
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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