우주의WouldYou

#include <vector>
#include <iostream>

using namespace std;

vector<int> solution(vector<int> arr) 
{
    vector<int> answer;

    int tmp = arr[0];
    answer.push_back(tmp);
    for(int i=1; i < arr.size(); i++){
        if(tmp == arr[i]){
            continue;
        }
        tmp = arr[i];
        answer.push_back(tmp);
    }
    return answer;
}