#include <string>

using namespace std;

constexpr int kN = 21;

int c[kN][kN];

void init() {
  c[0][0] = 1;
  for (int i = 1; i < kN; ++i) {
    c[i][0] = 1;
    for (int j = 1; j < kN; ++j) {
      c[i][j] = c[i - 1][j] + c[i - 1][j - 1];
    }
  }
}
string g(int x, int k) {
  string s;
  for (int i = 0, j = 0; i < 2 * k; ++i) {
    if (x >= c[2 * k - i - 1][k - j]) {
      x -= c[2 * k - i - 1][k - j], ++j;
      s += '1';
    } else {
      s += '0';
    }
  }
  return s;
}
int f(int x, int y, int k) {
  string sx = g(x, k), sy = g(y, k);
  for (int i = 0; i < 2 * k; ++i) {
    if (sx[i] == '0' && sy[i] == '1') {
      return i;
    }
  }
  return -1;
}
int morning(int x, int r) {
  return f(x, r, 10);
}
int afternoon(int l, int x, int r) {
  int p = f(l, x, 6), q = f(x, r, 6);
  return f(p, q, 4);
}
int evening(int l, int x, int r) {
  return x < 3 ? x : (l == 0 || r == 0 ? 1 + (l == 1 || r == 1) : 0);
}