#include <bits/stdc++.h>
using namespace std;
const int maxn = 5e5;
char op[maxn];
int x[maxn];
int ansx[maxn], anso[maxn], ansa[maxn];
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int n;
  cin >> n;
  for (int i = 0; i < n; i++) cin >> op[i] >> x[i];
  for (int i = 0; i < 10; i++) {
    int t1 = 0;
    for (int j = 0; j < n; j++) {
      if (op[j] == '|' && ((1 << i) & x[j])) t1 = t1 | 1;
      if (op[j] == '^' && ((1 << i) & x[j])) t1 = t1 ^ 1;
      if (op[j] == '&' && !((1 << i) & x[j])) t1 = 0;
    }
    int t2 = 1;
    for (int j = 0; j < n; j++) {
      if (op[j] == '|' && ((1 << i) & x[j])) t2 = t2 | 1;
      if (op[j] == '^' && ((1 << i) & x[j])) t2 = t2 ^ 1;
      if (op[j] == '&' && !((1 << i) & x[j])) t2 = 0;
    }
    if (t1 == 0 && t2 == 0) ansx[i] = 0, anso[i] = 0, ansa[i] = 0;
    if (t1 == 0 && t2 == 1) ansx[i] = 0, anso[i] = 0, ansa[i] = 1;
    if (t1 == 1 && t2 == 0) ansx[i] = 1, anso[i] = 0, ansa[i] = 1;
    if (t1 == 1 && t2 == 1) ansx[i] = 0, anso[i] = 1, ansa[i] = 1;
  }
  cout << "3\n";
  int Ax = 0;
  for (int i = 0; i < 10; i++)
    if (ansx[i]) Ax += (1 << i);
  int Ao = 0;
  for (int i = 0; i < 10; i++)
    if (anso[i]) Ao += (1 << i);
  int Aa = 0;
  for (int i = 0; i < 10; i++)
    if (ansa[i]) Aa += (1 << i);
  cout << "^ " << Ax << endl;
  cout << "& " << Aa << endl;
  cout << "| " << Ao << endl;
  return 0;
}
