#include<bits/stdc++.h>
using namespace std;

void z_algorithm(int *s,int *z,int n){
    int c=0;
    for(int i=1;i<n;i++){
        if(i+z[i-c]<c+z[c]){
            z[i]=z[i-c];
        }else{
            int j=max(0,c+z[c]-i);
            while(i+j<n&&s[j]==s[i+j])j++;
            z[i]=j;
            c=i;
        }
    }
    z[0]=n;
}

int n;
int a[200005];
int b[200005];
int s[600005];
int z[600005];

int main(){

    scanf("%d",&n);
    for(int i=0;i<n;i++)scanf("%d",a+i);
    for(int i=0;i<n;i++)scanf("%d",b+i);
    a[n]=a[0];
    b[n]=b[0];
    for(int i=0;i<n;i++){
        s[i]=b[i]^b[i+1];
        s[i+n]=s[i+(n<<1)]=a[i]^a[i+1];
    }
    z_algorithm(s,z,n*3);
    for(int i=n;i<n<<1;i++){
        if(z[i]>=n)printf("%d %d\n",i-n,a[i-n]^b[0]);
    }

    return 0;
}
### Prompt

Develop a solution in Cpp to the problem described below:

Given are two sequences a=\\{a_0,\ldots,a_{N-1}\\} and b=\\{b_0,\ldots,b_{N-1}\\} of N non-negative integers each.

Snuke will choose an integer k such that 0 \leq k < N and an integer x not less than 0, to make a new sequence of length N, a'=\\{a_0',\ldots,a_{N-1}'\\}, as follows:

* a_i'= a_{i+k \mod N}\ XOR \ x



Find all pairs (k,x) such that a' will be equal to b.

What is \mbox{ XOR }?

The XOR of integers A and B, A \mbox{ XOR } B, is defined as follows:

* When A \mbox{ XOR } B is written in base two, the digit in the 2^k's place (k \geq 0) is 1 if either A or B, but not both, has 1 in the 2^k's place, and 0 otherwise.

For example, 3 \mbox{ XOR } 5 = 6. (In base two: 011 \mbox{ XOR } 101 = 110.)

Constraints

* 1 \leq N \leq 2 \times 10^5
* 0 \leq a_i,b_i < 2^{30}
* All values in input are integers.

Input

Input is given from Standard Input in the following format:


N
a_0 a_1 ... a_{N-1}
b_0 b_1 ... b_{N-1}


Output

Print all pairs (k, x) such that a' and b will be equal, using one line for each pair, in ascending order of k (ascending order of x for pairs with the same k).

If there are no such pairs, the output should be empty.

Examples

Input

3
0 2 1
1 2 3


Output

1 3


Input

5
0 0 0 0 0
2 2 2 2 2


Output

0 2
1 2
2 2
3 2
4 2


Input

6
0 1 3 7 6 4
1 5 4 6 2 3


Output

2 2
5 5


Input

2
1 2
0 0


Output

### Response

```cpp
#include<bits/stdc++.h>
using namespace std;

void z_algorithm(int *s,int *z,int n){
    int c=0;
    for(int i=1;i<n;i++){
        if(i+z[i-c]<c+z[c]){
            z[i]=z[i-c];
        }else{
            int j=max(0,c+z[c]-i);
            while(i+j<n&&s[j]==s[i+j])j++;
            z[i]=j;
            c=i;
        }
    }
    z[0]=n;
}

int n;
int a[200005];
int b[200005];
int s[600005];
int z[600005];

int main(){

    scanf("%d",&n);
    for(int i=0;i<n;i++)scanf("%d",a+i);
    for(int i=0;i<n;i++)scanf("%d",b+i);
    a[n]=a[0];
    b[n]=b[0];
    for(int i=0;i<n;i++){
        s[i]=b[i]^b[i+1];
        s[i+n]=s[i+(n<<1)]=a[i]^a[i+1];
    }
    z_algorithm(s,z,n*3);
    for(int i=n;i<n<<1;i++){
        if(z[i]>=n)printf("%d %d\n",i-n,a[i-n]^b[0]);
    }

    return 0;
}
```