[백준] 2480번 주사위 세개 c++

#include <iostream>

using namespace std;

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int a;
    int sum;
    for (int i = 0; i < 3; i++) {
        sum = 0;
        for (int j = 0; j < 4; j++) {
            cin >> a;
            sum += a;
        }
        if (sum == 3)
            cout << 'A' << "\n";
        else if (sum == 2)
            cout << 'B' << "\n";
        else if (sum == 1)
            cout << 'C' << "\n";
        else if (sum == 0)
            cout << 'D' << "\n";
        else if (sum == 4)
            cout << 'E' << "\n";
    }
}