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 n, f[11], t[11];
char x;
int main() {
  cin >> n;
  for (int i = 0; i < n; i++) {
    int a;
    cin >> x >> a;
    for (int j = 0; j < 10; j++) {
      if (x == '&' && (a & (1 << j)) == 0) f[j] = -1;
      if (x == '|' && (a & (1 << j))) f[j] = 1;
      if (x == '^' && (a & (1 << j))) f[j] *= -1, t[j] ^= 1;
    }
  }
  int a = 0, b = 1023, c = 0;
  for (int i = 0; i < 10; i++) {
    if (f[i] == 1) a += (1 << i);
    if (f[i] == -1) b -= (1 << i);
    if (f[i] == 0 && t[i]) c += (1 << i);
  }
  cout << "3" << endl
       << "| " << a << endl
       << "& " << b << endl
       << "^ " << c << endl;
  return 0;
}
