#include <bits/stdc++.h>
#pragma comment(linker, "/STACK:1024000000,1024000000")
using namespace std;
const int INF = 0x3f3f3f3f;
const double eps = 1e-8;
int n, x[500000 + 5] = {0};
int a[500005][11] = {0}, ans1[11] = {0};
char ch[500000 + 5], ans2[11] = {};
int f(int i, int tmp) {
  for (int j = 0; j < n; j++) {
    if (ch[j] == '&') tmp = tmp & a[j][i];
    if (ch[j] == '|') tmp = tmp | a[j][i];
    if (ch[j] == '^') tmp = tmp ^ a[j][i];
  }
  return tmp;
}
int main() {
  scanf("%d", &n);
  for (int i = 0; i < n; i++) {
    scanf("%c", &ch[i]);
    scanf("%c %d", &ch[i], &x[i]);
    for (int j = 0; j < 10; j++) {
      a[i][j] = x[i] & 1;
      x[i] /= 2;
      if (!x[i]) break;
    }
  }
  for (int i = 0; i < 10; i++) {
    int a1 = f(i, 0), b1 = f(i, 1);
    if (a1 == 0 && b1 == 0) {
      ans1[i] = 0;
      ans2[i] = '&';
    } else if (a1 == 0 && b1 == 1) {
      ans1[i] = 0;
      ans2[i] = '^';
    } else if (a1 == 1 && b1 == 0) {
      ans1[i] = 1;
      ans2[i] = '^';
    } else if (a1 == 1 && b1 == 1) {
      ans1[i] = 1;
      ans2[i] = '|';
    }
  }
  printf("3\n");
  int ans = 1;
  for (int i = 9; i >= 0; i--) {
    ans = ans * 2 + 1;
    if (ans2[i] == '&') ans--;
  }
  printf("& %d\n", ans - 1024);
  ans = 0;
  for (int i = 9; i >= 0; i--) {
    ans *= 2;
    if (ans2[i] == '^') ans += ans1[i];
  }
  printf("^ %d\n", ans);
  ans = 0;
  for (int i = 9; i >= 0; i--) {
    ans *= 2;
    if (ans2[i] == '|') ans += ans1[i];
  }
  printf("| %d\n", ans);
  return 0;
}
