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