Submission #7017273

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Source Code Expand

#include <bits/stdc++.h>
#include <iostream>
#include <boost/foreach.hpp>
#include <vector>
#include <algorithm>
using namespace std;

int main() {
  int N;
  cin >> N;

  vector<int> a_i(N);
  for (int i = 0; i < N; i++) {
    cin >> a_i.at(i);
  }
  std::sort(a_i.begin(), a_i.end());
  a_i.erase(std::unique(a_i.begin(), a_i.end()), a_i.end());
 
  cout << a_i.size()<< endl;
}

Submission Info

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