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;
const int maxn = 5e5 + 1e4;
int dp[10010];
pair<int, int> a[maxn];
int main() {
  int n;
  char c;
  int x;
  scanf("%d", &n);
  int zero = 0, one = 1023;
  for (int i = 0; i < n; i++) {
    scanf("%c", &a[i].first);
    scanf("%d", &a[i].second);
    if (a[i].first == '|') one |= a[i].second, zero |= a[i].second;
    if (a[i].first == '&') one &= a[i].second, zero &= a[i].second;
    if (a[i].first == '^') one ^= a[i].second, zero ^= a[i].second;
  }
  for (int i = 0; i < 1023; i++) {
    for (int j = 0; j < 1023; j++) {
      if (((0 & i) & j) == zero && ((1023 & i) & j) == one) {
        cout << "2\n& " << i << "\n& " << j;
        return 0;
      }
      if (((0 | i) | j) == zero && ((1023 | i) | j) == one) {
        cout << "2\n| " << i << "\n| " << j;
        return 0;
      }
      if (((0 ^ i) ^ j) == zero && ((1023 ^ i) ^ j) == one) {
        cout << "2\n^ " << i << "\n^ " << j;
        return 0;
      }
      if (((0 & i) | j) == zero && ((1023 & i) | j) == one) {
        cout << "2\n& " << i << "\n| " << j;
        return 0;
      }
      if (((0 & i) ^ j) == zero && ((1023 & i) ^ j) == one) {
        cout << "2\n& " << i << "\n^ " << j;
        return 0;
      }
      if (((0 | i) ^ j) == zero && ((1023 | i) ^ j) == one) {
        cout << "2\n| " << i << "\n^ " << j;
        return 0;
      }
      if (((0 | i) & j) == zero && ((1023 | i) & j) == one) {
        cout << "2\n| " << i << "\n& " << j;
        return 0;
      }
      if (((0 ^ i) | j) == zero && ((1023 ^ i) | j) == one) {
        cout << "2\n^ " << i << "\n| " << j;
        return 0;
      }
      if (((0 ^ i) & j) == zero && ((1023 ^ i) & j) == one) {
        cout << "2\n^ " << i << "\n& " << j;
        return 0;
      }
    }
  }
  cout << 0;
  return 0;
}
