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 a[2][10];
int main() {
  for (int i = 0; i < 10; i++) a[1][i] = 1;
  int n, m;
  char c;
  scanf("%d", &n);
  getchar();
  for (int i = 0; i < n; i++) {
    scanf("%c %d", &c, &m);
    getchar();
    if (c == '&') {
      for (int j = 0; j < 10; j++)
        for (int k = 0; k < 2; k++) a[k][j] &= ((m >> j) & 1);
    }
    if (c == '|') {
      for (int j = 0; j < 10; j++)
        for (int k = 0; k < 2; k++) a[k][j] |= ((m >> j) & 1);
    }
    if (c == '^') {
      for (int j = 0; j < 10; j++)
        for (int k = 0; k < 2; k++) a[k][j] ^= ((m >> j) & 1);
    }
  }
  int x = 0, y = 0, z = 0;
  for (int i = 0; i < 10; i++) {
    if (a[0][i] == 0 && a[1][i] == 1) {
      x = x * 2 + 1;
      y = y * 2 + 0;
      z = z * 2 + 0;
    } else if (a[0][i] == 1 && a[1][i] == 0) {
      x = x * 2 + 1;
      y = y * 2 + 0;
      z = z * 2 + 1;
    } else if (a[0][i] == 0 && a[1][i] == 0) {
      x = x * 2 + 0;
      y = y * 2 + 0;
      z = z * 2 + 0;
    } else {
      x = x * 2 + 1;
      y = y * 2 + 1;
      z = z * 2 + 0;
    }
  }
  printf("3\n");
  printf("& %d\n", x);
  printf("| %d\n", y);
  printf("^ %d\n", z);
  return 0;
}
