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 = 1e6 + 7;
string x, t;
char s;
int n, a, ors, ands, xors, c, st = -1;
int main() {
  for (int i = 0; i < 20; i++) x += 'x';
  cin >> n;
  for (int i = 0; i < n; i++) {
    t = "";
    cin >> s >> a;
    while (a) {
      if (a & 1)
        t += '1';
      else
        t += '0';
      a = a >> 1;
    }
    for (int j = 0; j < t.length(); j++) {
      if (s == '&' && t[j] == '0') x[j] = '0';
      if (s == '|' && t[j] == '1') x[j] = '1';
      if (s == '^') {
        if ((t[j] == '0' && x[j] == '0') || (t[j] == '1' && x[j] == '1'))
          x[j] = '0';
        else if ((t[j] == '1' && x[j] == '0') || (t[j] == '0' && x[j] == '1'))
          x[j] = '1';
        else if ((t[j] == 'x' && x[j] == '1'))
          x[j] = 'y';
        else if ((t[j] == 'y' && x[j] == '1'))
          x[j] = 'x';
      }
    }
  }
  for (int i = 0; i < 10; i++)
    if (x[i] == '1') ors += (1 << i);
  for (int i = 0; i < 10; i++)
    if (x[i] != '0') ands += (1 << i);
  for (int i = 0; i < 10; i++)
    if (x[i] == 'y') xors += (1 << i);
  c = (xors > 0) + (ands > 0) + (ors > 0);
  cout << c << endl;
  if (xors) cout << "^ " << xors << endl;
  if (ors) cout << "| " << ors << endl;
  if (ands) cout << "& " << ands;
  return 0;
}
