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;
struct oper {
  char a;
  short int b;
};
int n, newn;
int a = 1023, o = 0, x = 0;
int r1 = 1023, r2 = 0;
vector<oper> ops, newops;
void Input() {
  cin >> n;
  ops.resize(n);
  for (int i = 0; i < n; i++) cin >> ops[i].a >> ops[i].b;
}
void Body() {
  for (int i = 0; i < n; i++) {
    if (ops[i].a == '|') {
      r1 = r1 | ops[i].b;
      r2 = r2 | ops[i].b;
    }
    if (ops[i].a == '&') {
      r1 = r1 & ops[i].b;
      r2 = r2 & ops[i].b;
    }
    if (ops[i].a == '^') {
      r1 = r1 ^ ops[i].b;
      r2 = r2 ^ ops[i].b;
    }
  }
  int q1, q2, tmp;
  for (int i = 0; i < 10; i++) {
    q1 = r1 % 2;
    r1 = r1 / 2;
    q2 = r2 % 2;
    r2 = r2 / 2;
    tmp = pow((float)2, i);
    if (q1 == q2) {
      if (q1 == 0)
        a = a & ~tmp;
      else
        o = o | tmp;
    } else if (q1 == 0)
      x = x | tmp;
  }
}
void Output() {
  if (a != 1023) newn++;
  if (o != 0) newn++;
  if (x != 0) newn++;
  cout << newn << endl;
  if (a != 1023) cout << "& " << a << endl;
  if (o != 0) cout << "| " << o << endl;
  if (x != 0) cout << "^ " << x << endl;
}
int main() {
  Input();
  Body();
  Output();
  return 0;
}
