#include <bits/stdc++.h>
using namespace std;
int n, x[500005];
char c[500005];
int a[20];
int q, w, e;
int main() {
  cin.tie(0);
  cout.tie(0);
  ios_base::sync_with_stdio(false);
  cin >> n;
  for (int i = 0; i < 10; i++) a[i] = 2;
  for (int i = 0; i < n; i++) {
    cin >> c[i] >> x[i];
  }
  for (int i = 0; i < 10; i++) {
    int k = (1 << i);
    for (int j = 0; j < n; j++) {
      if (c[j] == '|') {
        if (x[j] & k) {
          a[i] = 1;
        }
      } else if (c[j] == '&') {
        if (!(x[j] & k)) {
          a[i] = 0;
        }
      } else {
        if (x[j] & k) {
          if (a[i] == 0)
            a[i] = 1;
          else if (a[i] == 1)
            a[i] = 0;
          else if (a[i] == 2)
            a[i] = 3;
          else
            a[i] = 2;
        }
      }
    }
  }
  for (int i = 0; i < 10; i++) {
    if (a[i] != 0) q += (1 << i);
    if (a[i] == 3) w += (1 << i);
    if (a[i] == 1) e += (1 << i);
  }
  cout << "3\n";
  cout << "& " << q << "\n";
  cout << "^ " << w << "\n";
  cout << "| " << e << "\n";
  return 0;
}
