1
& 0
 1
^ 123
 10
^ 218
& 150
| 935
& 61
| 588
& 897
| 411
| 584
^ 800
| 704
 3
& 1
& 3
& 5
 1
| 123
 1
^ 0
 1
| 1023
 3
& 242
^ 506
^ 522
 10
^ 160
& 1021
& 510
^ 470
& 1022
& 251
& 760
& 1016
| 772
| 515
 1
& 1023
 1
| 0
 2
| 56
^ 875
 1
^ 1023
 2
| 999
^ 689
 3
^ 125
^ 377
& 1019
 1
& 123

3
& 0
| 0
^ 0
 3
& 1023
| 0
^ 123
 3
& 763
| 763
^ 0
 3
& 1
| 0
^ 0
 3
& 1023
| 123
^ 0
 3
& 1023
| 0
^ 0
 3
& 1023
| 1023
^ 0
 3
& 1010
| 768
^ 240
 2
| 775
^ 112
 3
& 1023
| 0
^ 0
 3
& 1023
| 0
^ 0
 3
& 983
| 16
^ 835
 3
& 1023
| 0
^ 1023
 3
& 350
| 326
^ 16
 3
& 1019
| 0
^ 256
 3
& 123
| 0
^ 0

#include <bits/stdc++.h>
using namespace std;
int ar[11];
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int n;
  cin >> n;
  for (int i = 0; i < 10; i++) ar[i] = -1;
  for (int i = 0; i < n; i++) {
    char c;
    int d;
    cin >> c >> d;
    if (c == '&') {
      int j = 0;
      while (j < 10) {
        if (d % 2 == 0) ar[j] = 0;
        d /= 2;
        j += 1;
      }
    } else if (c == '|') {
      int j = 0;
      while (j < 10) {
        if (d % 2 == 1) ar[j] = 1;
        d /= 2;
        j += 1;
      }
    } else if (c == '^') {
      int j = 0;
      while (j < 10) {
        if (d % 2 == 1) {
          if (ar[j] == -1)
            ar[j] = 2;
          else if (ar[j] == 2)
            ar[j] = -1;
          else if (ar[j] == 1)
            ar[j] = 0;
          else if (ar[j] == 0)
            ar[j] = 1;
        }
        d /= 2;
        j += 1;
      }
    }
  }
  int a = 0, o = 0, x = 0, base = 1;
  for (int i = 0; i < 10; i++) {
    if (ar[i] == -1)
      a += 1 * base;
    else if (ar[i] == 1)
      o += 1 * base;
    else if (ar[i] == 2)
      x += 1 * base;
    base *= 2;
  }
  vector<pair<char, int> > v;
  if (a != 0) v.push_back(make_pair('&', a));
  if (o != 0) v.push_back(make_pair('|', o));
  if (x != 0) v.push_back(make_pair('^', x));
  cout << v.size() << endl;
  for (int i = 0; i < v.size(); i++)
    cout << v[i].first << " " << v[i].second << endl;
  return 0;
}
