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;
const int N = (int)1e6 + 5;
const int mod = 1000000007;
int main() {
  int anda = 1023;
  int xora = 0;
  int ora = 0;
  int n;
  scanf("%d", &n);
  int min = 0;
  int max = 1023;
  while (n--) {
    char c;
    int x;
    cin >> c >> x;
    if (c == '|')
      min |= x, max |= x;
    else if (c == '&')
      min &= x, max &= x;
    else
      min ^= x, max ^= x;
  }
  for (int i = 0; i < 10; i++) {
    int l = 0, r = 0;
    if ((1 << i) & min) l = 1;
    if ((1 << i) & max) r = 1;
    if (l + r == 2) ora |= (1 << i);
    if (l + r == 0) anda ^= (1 << i);
    if (l && !r) xora ^= (1 << i);
  }
  cout << 3 << endl
       << "| " << ora << endl
       << "& " << anda << endl
       << "^ " << xora << endl;
  return 0;
}
