[프로그래머스] 영어 끝말 잇기

#include <string>
#include <vector>
#include <iostream>

using namespace std;

vector<int> solution(int n, vector<string> words) {
    vector<int> answer;
    int flag = 0;
    int turn = 0;
    int turn_a = 0;
    int turn_b = 0;
    int num =0;
    //중복성 체크
    for(int i=0; i < words.size() -1 ; i++){
        for(int j = i+1; j < words.size(); j++){
            if(words[i] == words[j]){
                turn_a = j;
                break;
            }
        }
    }
    //겹치는지 확인
    for(int i=1; i< words.size();i++){
        string before = words[i-1];
        string now = words[i];
        int leng = before.length();
        if(before[leng-1] != now[0]){
            turn_b = i;
            break;
        }
    }
    if(turn_a!=0 && turn_b!=0){
        if(turn_a > turn_b)
            turn = turn_b;
        else
            turn = turn_a;
    }
    else{
        if(turn_a > turn_b)
            turn = turn_a;
        else
            turn = turn_b;
    }
    if(turn != 0){
        num = turn % n + 1;
        turn = turn / n + 1;
    }
    answer.push_back(num);
    answer.push_back(turn);
    return answer;
}

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