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;
int const Max_N = 1e6 + 5;
int n;
char op[Max_N];
int x[Max_N];
int main() {
  scanf("%d", &n);
  for (int i = 0; i < n; ++i) {
    char s[5];
    scanf("%s%d", s, x + i);
    op[i] = s[0];
  }
  int ad = 0, xr = 0, r = 0;
  for (int i = 0; i < 10; ++i) {
    int t0 = 0;
    int t1 = 1;
    for (int j = 0; j < n; ++j) {
      int k = (x[j] >> i) & 1;
      if (op[j] == '|') {
        t0 |= k;
        t1 |= k;
      } else if (op[j] == '&') {
        t0 &= k;
        t1 &= k;
      } else {
        t0 ^= k;
        t1 ^= k;
      }
    }
    if (t0 == 0 && t1 == 1) {
      ad |= (1 << i);
    } else if (t0 == 0 && t1 == 0) {
    } else if (t0 == 1 && t1 == 0) {
      ad |= (1 << i);
      xr |= (1 << i);
    } else if (t0 == 1 && t1 == 1) {
      ad |= (1 << i);
      r |= (1 << i);
    }
  }
  printf("3\n");
  ;
  printf("^ %d\n", xr);
  printf("| %d\n", r);
  printf("& %d\n", ad);
  return 0;
}
