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  1. #include <bits/stdc++.h>
  2.  
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7.     int n;
  8.     cin>>n;
  9.     vector<int> customer (n, 0);
  10.     for(int i=0; i<n; i++) {
  11.         cin>>customer[i];
  12.     }
  13.  
  14.     sort(customer.begin(),customer.end());
  15.     long count = 0;
  16.     for(int i=n-1; i>=0; i--) {
  17.         count += abs(i+1-customer[i] );
  18.     }
  19.     cout<<count<<endl;
  20.     return 0;
  21. }
Success #stdin #stdout 0.01s 5500KB
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stdin
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4
4 4 4 4
stdout
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6
https://ideone.com/THVkp8
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
public

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