1992.cpp

// Authored by : cpprhtn
// Co-authored by : -
// http://boj.kr/04267bd2251a41109700585bc73a6de2
#include <bits/stdc++.h>
using namespace std;

int N;
const int MAX = 64;
int arr[MAX][MAX];
void solve(int n, int y, int x)
{
  if (n == 1) {
    cout << arr[y][x];
    return;
  }
  bool zero = true, one = true;
  for (int i = y; i < y + n; i++)
    for (int j = x; j < x + n; j++)
      if (arr[i][j])
        zero = false;
      else
        one = false;
  if (zero)
    cout << 0;
  else if (one)
    cout << 1;
  else {
    cout << "(";
    solve(n / 2, y, x); //왼쪽 위
    solve(n / 2, y, x + n / 2); //오른쪽 위
    solve(n / 2, y + n / 2, x); //왼쪽 아래
    solve(n / 2, y + n / 2, x + n / 2); //오른쪽 아래
    cout << ")";
  }
  return;
}
int main(void)
{
  ios::sync_with_stdio(0);
  cin.tie(0);
  cin >> N;
  for (int i = 0; i < N; i++) {
    string str;
    cin >> str;
    for (int j = 0; j < N; j++)
      arr[i][j] = str[j] - '0';
  }
  solve(N, 0, 0);
}