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>
int N;
int save[10];
int main() {
  for (int n = 0; n < 10; n++) save[n] = 3;
  scanf("%d", &N);
  for (int n = 0; n < N; n++) {
    char c;
    int d;
    scanf(" %c%d", &c, &d);
    if (c == '|') {
      for (int t = 1, k = 0; t < 1024; t *= 2, k++) {
        if (d & t) save[k] = 1;
      }
    } else if (c == '&') {
      for (int t = 1, k = 0; t < 1024; t *= 2, k++) {
        if (!(d & t)) save[k] = 0;
      }
    } else {
      for (int t = 1, k = 0; t < 1024; t *= 2, k++) {
        if (d & t) {
          if (save[k] > 1)
            save[k] = 5 - save[k];
          else
            save[k] = 1 - save[k];
        }
      }
    }
  }
  printf("3\n");
  int tmp = 0;
  for (int k = 0; k < 10; k++)
    if (save[k] == 1) tmp |= (1 << k);
  printf("| %d\n", tmp);
  tmp = 1023;
  for (int k = 0; k < 10; k++)
    if (save[k] == 0) tmp ^= (1 << k);
  printf("& %d\n", tmp);
  tmp = 0;
  for (int k = 0; k < 10; k++)
    if (save[k] == 2) tmp |= (1 << k);
  printf("^ %d\n", tmp);
  return 0;
}
