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 main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  int i, j, n;
  char ch;
  int num;
  cin >> n;
  int fl[10];
  for (i = 0; i <= 9; i++) fl[i] = 2;
  for (i = 1; i <= n; i++) {
    cin >> ch >> num;
    if (ch == '|') {
      for (j = 0; j <= 9; j++) {
        int z = num & (1 << j);
        if (z > 0) fl[j] = 1;
      }
    } else if (ch == '&') {
      for (j = 0; j <= 9; j++) {
        int z = num & (1 << j);
        if (z == 0) fl[j] = 0;
      }
    } else {
      for (j = 0; j <= 9; j++) {
        int z = num & (1 << j);
        if (z > 0) {
          if (fl[j] == 2)
            fl[j] = 3;
          else if (fl[j] == 3)
            fl[j] = 2;
          else {
            fl[j] = 1 - fl[j];
          }
        }
      }
    }
  }
  int num1 = 0, num2 = 0, num3 = 0;
  for (j = 0; j <= 9; j++) {
    if (fl[j] == 2) {
      num2 |= (1 << j);
    } else if (fl[j] == 3) {
      num2 |= (1 << j);
      num3 |= (1 << j);
    } else {
      if (fl[j] == 1) num2 |= (1 << j);
      num1 |= (1 << j);
    }
  }
  cout << 3 << ('\n');
  cout << "| " << num1 << ('\n');
  cout << "& " << num2 << ('\n');
  cout << "^ " << num3 << ('\n');
  return 0;
}
