Submission #66321781

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
using LL = long long;
using db = double;

void solve()
{
    int n;cin>>n;
    set<int> st;
    while(n--)
    {
        int tmp;
        cin>>tmp;
        st.insert(tmp);
    }
    cout<<st.size()<<endl;
    auto it = st.begin();
    cout<<*it;
    it++;
    while(it!=st.end())
    {
        cout<<" "<<*it;
        it++;
    }
    cout<<endl;
}

int main()
{
    ios::sync_with_stdio(false),cin.tie(0),cout.tie(0);
    int t = 1;
    //cin>>t;
    while(t--)
        solve();
    return 0;
}

Submission Info

Judge Result