Submission #66346847

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;

int main(){
  int n;
  cin >> n;
  vector<int> a(n);
  for(int i=0; i<n; ++i) cin >> a[i];
  
  sort(a.begin(), a.end());
  a.erase(unique(a.begin(), a.end()), a.end());

  int ans = 0;
  for(auto i:a){
    ans++;
  }
  
  cout << ans << endl;
  for(int i=0; i<ans; ++i){
    cout << a[i] << " ";
  }
  cout << endl;
}

Submission Info

Compile Error

Main.cpp: In function ‘int main()’:
Main.cpp:14:12: warning: unused variable ‘i’ [-Wunused-variable]
   14 |   for(auto i:a){
      |            ^

Judge Result