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 = 2e5 + 5;
int n, b[2][15], x, to_or, to_xor, to_and;
char ch;
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cin >> n;
  for (int i = 0; i < 10; i++) {
    b[1][i] = 1;
  }
  for (int i = 1; i <= n; i++) {
    cin >> ch >> x;
    for (int j = 0; j < 10; j++) {
      int bit = ((x >> j) & 1);
      if (ch == '^') {
        b[1][j] ^= bit;
        b[0][j] ^= bit;
      } else if (ch == '|') {
        b[1][j] |= bit;
        b[0][j] |= bit;
      } else {
        b[1][j] &= bit;
        b[0][j] &= bit;
      }
    }
  }
  for (int i = 0; i < 10; i++) {
    if (b[1][i] == 1 && b[0][i] == 1) {
      to_or += (1 << i);
    } else if (b[1][i] == 0 && b[0][i] == 1) {
      to_xor += (1 << i);
    } else if (b[1][i] == 0 && b[0][i] == 0) {
      to_or += (1 << i);
      to_xor += (1 << i);
    }
  }
  cout << 3 << "\n";
  cout << "& " << to_and << "\n";
  cout << "| " << to_or << "\n";
  cout << "^ " << to_xor;
}
