제출 #1076099

#제출 시각아이디문제언어결과실행 시간메모리
1076099Rolo678Advertisement 2 (JOI23_ho_t2)C++14
10 / 100
548 ms30760 KiB
#include <bits/stdc++.h>
using namespace std;

int main()
{
  int n;
  cin >> n;
  set <int> s;
  for(int i = 0; i<n;i++)
  {
    int x;
    int e;
    cin >> x>> e;
    s.insert(x);
  }
  cout << s.size();
}
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