🐣 문제

링크 : https://school.programmers.co.kr/learn/courses/30/lessons/1845

🐥 코드

#include <vector>
#include <set>
using namespace std;

int solution(vector<int> nums)
{   
    set<int> s;
    int answer = 0;
    int n = nums.size() / 2;
    
    for(int i = 0; i < nums.size(); i++){
        s.insert(nums[i]);
    }
    
    if(s.size() < n) answer = s.size();
    else answer = n;
    
    return answer;
}