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 main() {
  int n, i, y;
  cin >> n;
  char c;
  int chh = 0;
  int ct[10], ch[10], pw[10];
  pw[0] = 1;
  for (i = 0; i < 10; i++) {
    ct[i] = 0;
    ch[i] = 0;
    if (i) pw[i] = pw[i - 1] * 2;
  }
  for (i = 0; i < n; i++) {
    scanf("%c", &c);
    scanf("%d", &y);
    int ctt = 0;
    if (c == '&') {
      while (ctt < 10) {
        if (y % 2 == 0) {
          ct[ctt] = 0;
          ch[ctt] = 1;
        }
        y /= 2;
        ctt++;
      }
    }
    if (c == '|') {
      while (ctt < 10) {
        if (y % 2 == 1) {
          ct[ctt] = 1;
          ch[ctt] = 1;
        }
        y /= 2;
        ctt++;
      }
    }
    if (c == '^') {
      while (ctt < 10) {
        ct[ctt] ^= (y % 2);
        if (ch[ctt] == 0) {
          ch[ctt] = 2;
        }
        y /= 2;
        ctt++;
      }
    }
  }
  int m = 0, nn = -1, o = 1023;
  for (i = 0; i < 10; i++)
    if (ch[i] == 2) nn = 0;
  for (i = 0; i < 10; i++) {
    if (ch[i] == 1) {
      if (ct[i])
        m += pw[i];
      else
        o -= pw[i];
    }
    if (ch[i] == 2 && ct[i]) nn += pw[i];
  }
  if (nn != -1) {
    cout << 3 << endl;
    cout << "| " << m << endl;
    cout << "& " << o << endl;
    cout << "^ " << nn << endl;
  } else {
    cout << 2 << endl;
    cout << "| " << m << endl;
    cout << "& " << o << endl;
  }
  return 0;
}
