#include <stdio.h>
int validate_checksum(int *mem, int n) {
// Write your XOR scan logic here
int x = *mem;
for(int i = 1; i < (n - 1); i++)
{
x = *(mem + i) ^ x;
}
if(x == *(mem + (n -1)))
{
return 1;
}
else
{
return 0;
}
}
int main() {
int n, arr[100];
scanf("%d", &n);
for (int i = 0; i < n; i++) {
scanf("%d", &arr[i]);
}
int result = validate_checksum(arr, n);
printf("%d", result);
return 0;
}