Submission #4663218

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Source Code Expand

#include<iostream>
#include<algorithm>
#include<cmath>
#include<vector>
#include<string>
#include<queue>
#include<set>
using namespace std;
typedef long long int ll;
typedef vector<pair<ll,ll> > Q;
typedef pair<int,int> P;
#define rep(i,n) for(int i=0;i<(int)(n);i++)

int n;
set<int> s;

int main()
{
  cin>>n;
  rep(i,n)
  {
    int x;
    cin>>x;
    s.insert(x);
  }

  cout<<s.size();

}

Submission Info

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