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 main() {
  char S[2];
  int num, N, a[3];
  scanf("%d", &N);
  a[0] = 0, a[1] = 1023, a[2] = 0;
  for (int i = 0; i < N; i++) {
    scanf("%s %d", S, &num);
    if (S[0] == '|')
      a[0] |= num;
    else if (S[0] == '&')
      a[1] &= num;
    else
      a[2] ^= num;
  }
  int cnt = 0;
  if (a[0] != 0) cnt++;
  if (a[1] != 1023 && a[1] != 0) cnt++;
  if (a[2] != 0) cnt++;
  if (cnt == 0)
    printf("0\n");
  else {
    printf("%d\n", cnt);
    if (a[0]) printf("| %d\n", a[0]);
    if (a[1] != 0 && a[1] != 1023) printf("& %d\n", a[1]);
    if (a[2] != 0) printf("^ %d\n", a[2]);
  }
}
