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