(C++) - 백준(BOJ) 13698 : Hawk eyes

#include <iostream>
#include <string>
using namespace std;
int main() {
    string word;
    int cup[4] = { 1,0,0,2 },a,b;
    cin >> word;
    for (int i = 0; i < word.size(); i++)
    {
        switch ((char)word[i])
        {
        case 'A':
            swap(cup[0], cup[1]);
            break;
        case 'B':
            swap(cup[0], cup[2]);
            break;
        case 'C':
            swap(cup[0], cup[3]);
            break;
        case 'D': 
            swap(cup[1], cup[2]);
            break;
        case 'E':
            swap(cup[1], cup[3]);
            break;
        case 'F':
            swap(cup[2], cup[3]);
            break;
        }

    }
    for (int i = 0; i < 4; i++)
    {
        if (cup[i] == 1)
            a= i + 1;
        else if (cup[i] == 2)
            b = i + 1;
    }
    cout << a << '\n' << b;
}