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;
bool yes(int x, int i) {
  int y = x;
  y = y >> i;
  y = y & 1;
  return y > 0;
}
int main() {
  int n;
  cin >> n;
  int x1 = 0, x2 = 1023;
  for (int i = 0; i < n; i++) {
    char c;
    cin >> c;
    int k;
    cin >> k;
    switch (c) {
      case '&':
        x1 = x1 & k;
        x2 = x2 & k;
        break;
      case '|':
        x1 = x1 | k;
        x2 = x2 | k;
        break;
      case '^':
        x1 = x1 ^ k;
        x2 = x2 ^ k;
        break;
    }
  }
  int xa = 1023, xo = 0, xx = 0;
  for (int i = 0; i < 10; i++) {
    if (yes(x1, i) && yes(x2, i)) {
      xo += (1 << i);
    }
    if (!yes(x1, i) && !yes(x2, i)) {
      xa -= (1 << i);
    }
    if (yes(x1, i) && !yes(x2, i)) {
      xx += (1 << i);
    }
  }
  int k = 0;
  if (xa != 1023) k++;
  if (xo != 0) k++;
  if (xx != 0) k++;
  cout << k << endl;
  if (xa != 1023) cout << "& " << xa << endl;
  if (xo != 0) cout << "| " << xo << endl;
  if (xx != 0) cout << "^ " << xx << endl;
  return 0;
}
