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;
template <class T>
T max2(const T &a, const T &b) {
  return (a < b ? b : a);
}
template <class T>
T min2(const T &a, const T &b) {
  return (a > b ? b : a);
}
template <class T>
T max3(const T &a, const T &b, const T &c) {
  return max2(a, max2(b, c));
}
template <class T>
T min3(const T &a, const T &b, const T &c) {
  return min2(a, min2(b, c));
}
template <class T>
T gcd(const T a, const T b) {
  return (b ? gcd<T>(b, a % b) : a);
}
template <class T>
T lcm(const T a, const T b) {
  return (a / gcd<T>(a, b) * b);
}
template <class T>
T mod(const T &a, const T &b) {
  return (a < b ? a : a % b);
}
long long int power(long long int x, long long int n) {
  long long int result = 1;
  while (n > 0) {
    if (n % 2 == 1) result = (result * x) % 1000000007;
    x = (x * x) % 1000000007;
    n = n / 2;
  }
  return result;
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  long long int first = 0;
  long long int last = 1023;
  int n;
  cin >> n;
  for (int i = 0; i < n; i++) {
    char temp;
    cin >> temp;
    int val;
    cin >> val;
    if (temp == '|') {
      first = (first | val);
      last = (last | val);
    }
    if (temp == '&') {
      first = (first & val);
      last = (last & val);
    }
    if (temp == '^') {
      first = (first ^ val);
      last = (last ^ val);
    }
  }
  int firstarray[10] = {0};
  int i = 0;
  int lastarray[10] = {0};
  while (first != 0) {
    firstarray[i] = first % 2;
    first = first / 2;
    i++;
  }
  i = 0;
  while (last != 0) {
    lastarray[i] = last % 2;
    last = last / 2;
    i++;
  }
  int ors[10] = {0};
  int xors[10] = {0};
  int ands[10];
  for (int i = 0; i < 10; i++) ands[i] = 1;
  for (int i = 0; i < 10; i++) {
    if (firstarray[i] == 1 && lastarray[i] == 1) {
      ors[i] = 1;
    } else {
      if (firstarray[i] == 0 && lastarray[i] == 1) {
        ors[i] = 0;
      } else {
        if (firstarray[i] == 1 && lastarray[i] == 0) {
          xors[i] = 1;
        } else {
          ands[i] = 0;
        }
      }
    }
  }
  int orval = 0;
  int xorval = 0;
  int andval = 0;
  for (int i = 0; i < 10; i++) {
    orval += ors[i] * power(2, i);
    xorval += xors[i] * power(2, i);
    andval += ands[i] * power(2, i);
  }
  cout << "3" << endl;
  cout << '&' << andval << endl;
  cout << '^' << xorval << endl;
  cout << '|' << orval << endl;
}
