#include <stdio.h>
int validate_checksum(int *mem, int n) {
// Write your XOR scan logic here
int calculated_xor = 0;
// XOR of all previous bytes (excluding itself)
for (int i = 0; i < n - 1; i++)
calculated_xor ^= mem[i];
// Compare calculated XOR with the provided checksum (last byte)
return (calculated_xor == mem[n - 1]) ? 1 : 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;
}