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