🐣 문제

링크 : https://school.programmers.co.kr/learn/courses/30/lessons/64061

🐥 코드

#include <string>
#include <vector>

using namespace std;

int solution(vector<vector<int>> board, vector<int> moves) {
    vector<int> stack(0, 0);
    int answer = 0;
  
    for(int i = 0; i < moves.size(); i++){
        int num = moves[i] - 1;
        for(int j = 0; j < board.size(); j++){
            if(board[j][num] != 0){
                stack.push_back(board[j][num]);
                board[j][num] = 0;
                if(stack.size() >= 2){
                    if(stack.at(stack.size()-1) == stack.at(stack.size()-2)){
                        answer += 2;
                        stack.pop_back();
                        stack.pop_back();
                    }
                }
                break;
            }
        }
    }
    
    return answer;
}