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  1. #include <bits/stdc++.h>
  2.     using namespace std;
  3.     #define mp make_pair
  4.     #define pb push_back
  5.     typedef long long ll;
  6.  
  7.     int main()
  8.     {
  9.         ios_base::sync_with_stdio(false);cin.tie(0); cout.tie(0);
  10.  
  11.         int n;
  12.         cin>>n;
  13.         long long a[n],c=1;
  14.         for(int i=0;i<n;i++) cin>>a[i];
  15.         sort(a,a+n);
  16.         for(int i=1;i<n-1;i++){
  17.             int f1=0,f2=0;
  18.             if(a[i]==a[i-1] && a[i]!=1){ a[i-1]-=1; f1+=1; }
  19.             if(a[i]==a[i+1]){ a[i+1]+=1; f2+=2; }
  20.             i+=f2;
  21.         }
  22.         set<long long > s;
  23.         for(int i=0;i<n;i++) s.insert(a[i]);
  24.         cout<<s.size();
  25.         return 0;
  26.     }
Success #stdin #stdout 0s 4196KB
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https://ideone.com/lJNEgG
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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