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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. const int N=1e6+4;
  4. long long a[N],n;
  5. int main()
  6. {
  7.     cin>>n;
  8.     for(int i=1;i<=n;i++)
  9.     {
  10.         cin>>a[i];
  11.     }
  12.     sort(a+1,a+n+1,greater<long long>());
  13.     long long s=a[1];
  14.     for(int i=2;i<=n;i++)
  15.     {
  16.         long long t=a[i]-i+1;
  17.         if(t>0) s=s+t;
  18.     }
  19.     cout<<s;
  20. }
  21.  
Success #stdin #stdout 0.01s 5496KB
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https://ideone.com/1J1uq2
language:
C++14 (gcc 8.3)
created:
1 year ago
visibility:
public

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