#include <stdio.h>
int validate_checksum(int *mem, int n) {
// Write your XOR scan logic here
int sum = 0,i;
for (i=0;i<n-1;i++)
{
sum ^= mem[i];
}
if (sum == 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;
}