#include <iostream>
#include <vector>
#include <algorithm>
#include <functional>
#include <queue>
#include <map>
#include <cmath>
#include <iomanip>
#include <set>
#include <cstdio>
#include <string>

using namespace std;

int main() {
  int x, y;
  cin >> x >> y;
  int z = max(x, y);
  while (true) {
    if (abs(z - max(x, y)) >= abs(x - y)) break;
    z++;
  }
  cout << z % 12 << endl;
  return 0;
}