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 long long int MAXn = 5e5 + 5;
pair<long long int, long long int> d[MAXn];
long long int ans[5];
int main() {
  long long int n;
  cin >> n;
  long long int a = 0, b = (1 << 10) - 1;
  for (long long int i = 0; i < n; i++) {
    char c;
    long long int t;
    cin >> c >> t;
    if (c == '&') a &= t, b &= t;
    if (c == '|') a |= t, b |= t;
    if (c == '^') a ^= t, b ^= t;
  }
  for (long long int i = 0; i < 10; i++) {
    long long int x = (1 << i);
    if (x & a) {
      if (x & b) {
        ans[0] |= x;
        ans[1] |= x;
        ans[2] |= 0;
      } else {
        ans[0] |= x;
        ans[1] |= 0;
        ans[2] |= x;
      }
    } else {
      if (x & b) {
        ans[0] |= x;
        ans[1] |= 0;
        ans[2] |= 0;
      } else {
        ans[0] |= 0;
        ans[1] |= 0;
        ans[2] |= 0;
      }
    }
  }
  cout << 3 << endl;
  cout << "^ " << ans[2] << endl;
  cout << "| " << ans[1] << endl;
  cout << "& " << ans[0] << endl;
}
