#include <bits/stdc++.h>
using namespace std;
const int N = 1e6 + 5;
int n;
pair<char, int> a[N];
int get_bit(int i, int mask) {
  if ((1 << (i)) & mask)
    return 1;
  else
    return 0;
}
void enter() {
  cin >> n;
  for (int i = (1), _b = (n); i <= _b; ++i) cin >> a[i].first >> a[i].second;
}
int change[12][2];
void process() {
  for (int i = (0), _b = (10); i < _b; ++i) {
    for (int t = (0), _b = (1); t <= _b; ++t) {
      bool cur = t;
      for (int j = (1), _b = (n); j <= _b; ++j) {
        if (a[j].first == '|') {
          cur |= get_bit(i, a[j].second);
        } else if (a[j].first == '^') {
          cur ^= get_bit(i, a[j].second);
        } else if (a[j].first == '&') {
          cur &= get_bit(i, a[j].second);
        }
      }
      change[i][t] = cur;
    }
  }
  for (int x = (0), _b = (1023); x <= _b; ++x) {
    bool ok = 1;
    int y = 0;
    for (int num = (0), _b = (1023); num <= _b; ++num) {
      int c = (num | x);
      for (int i = (0), _b = (10); i < _b; ++i) {
        if (get_bit(i, c) == 1 && change[i][get_bit(i, num)] == 0) {
          y |= (1 << (i));
        }
      }
    }
    for (int num = (0), _b = (1023); num <= _b; ++num) {
      int c = (num | x) ^ y;
      for (int i = (0), _b = (10); i < _b; ++i) {
        if (get_bit(i, c) != change[i][get_bit(i, num)]) {
          ok = 0;
        }
      }
    }
    if (ok) {
      cout << 2 << '\n';
      cout << "| " << x << '\n';
      cout << "^ " << y << '\n';
      return;
    }
  }
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  enter();
  process();
  return 0;
}
