백준 2490번 c++

#include <iostream>

using namespace std;

class gamestate {

private:

int zeronum;

int state;

public:

void computegamestate() {

zeronum = 0;

for (int i = 0; i < 3; i++) {

for (int j = 0; j < 4; j++) {

cin >> state;

if (state == 0)

zeronum += 1;

}

switch (zeronum) {

case 0:

cout << "E";

break;

case 1:

cout << "A";

break;

case 2:

cout << "B";

break;

case 3:

cout << "C";

break;

case 4:

cout << "D";

break;

}

zeronum = 0;

}

}

};

int main(void) {

gamestate g;

g.computegamestate();

}