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;
int f[1005];
char a[1005];
int main() {
  int n;
  while (scanf("%d", &n) != EOF) {
    int z, zz;
    for (int i = 0; i <= 10; ++i) f[i] = -1;
    for (int j = 1; j <= n; ++j) {
      scanf("%s", a);
      scanf("%d", &z);
      for (int i = 0; i <= 9; ++i) {
        zz = ((z >> i) & 1);
        if (a[0] == '&') {
          if (!zz) f[i] = 0;
        } else if (a[0] == '|') {
          if (zz) f[i] = 1;
        } else {
          if (zz) {
            if (f[i] == -1)
              f[i] = 2;
            else if (f[i] == 2)
              f[i] = -1;
            else
              f[i] = f[i] ^ 1;
          }
        }
      }
    }
    printf("3\n");
    int aa = 0, bb = 0, cc = 0;
    for (int i = 0; i <= 9; ++i) {
      aa = aa + (1 << i);
      if (f[i] == 0)
        aa = aa - (1 << i);
      else if (f[i] == 1)
        bb = bb + (1 << i);
      else if (f[i] == 2)
        cc = cc + (1 << i);
    }
    printf("& %d\n", aa);
    printf("| %d\n", bb);
    printf("^ %d\n", cc);
  }
}
